best explanation is universe is going in a infinite loop
Nope, the infinite explantion doesn't work.
Imagine a calendar stretching back in time forever. Time moves through the calendar one day at a time (it’s more precise to say one event at a time, but days will suffice for our discussion). If the universe had existed forever, then there would have been an infinite number of days before today. But how could time have reached this present moment if it had to traverse an infinite number of previous days to get here?
If there were an infinite number of days before today, then there would always be “one more day” in history for time to move through, and today could never happen.
Here’s another example that illustrates this concept. Let’s say your Uncle Bill owns a flower shop. Each day Bill counts all his flowers, and only after he counts each one will he open his flower shop for business. Now, if Bill has only a dozen flowers to count, he will open up the shop pretty quickly. But if he has a million or a billion flowers to count, then it will take him much longer before he can open the shop.
But even if he has a trillion flowers to count, eventually enough time will pass and the shop will open after Bill finished counting them (that is, if Bill has enough coffee to keep him awake). But imagine that Bill has an infinite number of flowers he needs to count. Remember, he still has to count all of them before he can open the shop. How long will it take before he’s able to open the shop?
Well, because there would always be at least one more flower to count, Bill could never finish her task. This means that the shop could never open. But if you went to the shop and saw an “OPEN” sign on the door, then that would tell you that Uncle Bill did not have an infinite number of flowers to count. The fact that today is happening is like the flower shop’s being open. Neither could happen if an infinite number of days (or flowers being counted) had to occur first.
Therefore, the past is not infinite, and the universe had a beginning. Even the skeptic David Hume admitted this: “An infinite number of real parts of time, passing in succession, and exhausted one after another, appears so evident a contradiction, that no man, one should think, whose judgment is not corrupted, instead of being improved, by the sciences, would ever be able to admit it.”
But maybe infinity is something we don’t really understand, so that is why the infinite flower shop doesn’t make sense. Fortunately, modern set theory developed by the mathematician Georg Cantor allows us to do mathematical operations with infinite quantities; but it does not show us how these infinite quantities could exist in the real world. According to mathematicians Edward Kasner and James Newman,
“the infinite certainly does not exist in the same sense that we say, ‘There are fish in the sea.’ . . . ‘Existence’ in the mathematical sense is wholly different from the existence of objects in th physical world.”
there a big bang explosion , galaxies form , planets form , life exists
Because it was caused to exist by something. Everything that came to exist has to have an explanation, and there is no plausible one except God.
universe keeps on expanding , then dies in what people call 'heat death' , then contracts , then explodes again .
I don't think you really understand what heat death is.
I'm sure you're aware of the second law of thermodynamics, which states that matter and energy always tend toward disorder (or what scientists call entropy). The second law explains why striking billiard balls with a pool cue never results in the balls rearranging themselves into the standard rack formation. Such behavior would violate the universe’s tendency to always move toward disorder and decay.
You especially see the second law of thermodynamics at work in heat reactions. For example, have you ever taken dinner out of the oven, gotten ready to take that first delicious bite, but then get interrupted by a phone call? After the call, you sit down to eat, only to find that your dinner is cold.
Why does your dinner get cold over time? Why doesn’t it stay warm, or get warmer? According to the second law, all systems move toward disorder and as a result, everything, including heat and energy, moves toward equilibrium. This tendency causes your hot dinner to get cold and the room to get a tiny bit warmer until the two objects are at the same temperature. The second law also applies to the universe as a whole.
Eventually, all the stars will burn out or explode until there is a thin mist of atoms spread throughout the universe at absolute zero, the coldest temperature anything can be. Scientists have a name for this future condition: heat death. There can be no contraction or explosion possible after this, unlike the Big Bang which happened due to a very particular set of conditions and environment.
While some physicists claim that the total amount of entropy in our universe may be larger than originally thought, they generally agree the observable universe is not at maximum entropy. If it were, it would be highly unlikely that you could even be reading this, since entropy increases with all of the biological processes associated with activities like reading. Indeed, because conscious life requires entropy, this means, in the words of physicists Lawrence Krauss and Glenn Starkmann, “[L]ife cannot endure forever.”
But if the universe has existed forever, why haven’t the stars in the universe already burned out? Why hasn’t heat death already happened?
Think of a flashlight. If you see a flashlight that is dead, it could have been sitting there for all eternity. But if the flashlight is shining, then you know it could not have been shining forever, because the batteries would have run out a long time ago.
Likewise, think of the whole universe as having energy and “shining” like the flashlight. If the universe had existed for all eternity, then all of the energy in the universe, like the energy in stars or planets, would have been used up and the universe would be like a dead flashlight—cold, dark, and lifeless. If God does not intervene, then heat death will happen billions of years from now. But if the universe were eternal, heat death should have already occurred.
According to the physicist P.C.W. Davies, “[T]he universe cannot have existed forever, otherwise it would have reached its equilibrium end state an infinite time ago. Conclusion: the universe did not always exist.”
Maybe there is an unknown exception to the second law of thermodynamics that allows for an increase in order and energy even though the universe is eternal? This is very unlikely, because the second law of thermodynamics is one of the best attested laws in physics. Sir Arthur Eddington, an early twentieth-century physicist, wrote:
"If someone points out to you that your pet theory of the universe is in disagreement with Maxwell’s equations—then so much the worse for Maxwell’s equations. If it is found to be contradicted by observation—well, these experimentalists do bungle things sometimes. But if your theory is found to be against the second law of thermodynamics I can give you no hope; there is nothing for it but to collapse in deepest
humiliation."
because there was infinite universes
Except there aren't. According to the second law of thermodynamics all physical systems move toward disorder and decay. If the universe had been eternal, everything in the universe (including biological life and objects like the sun) would have run out of energy a long time ago. But there still is energy, so the universe must be of finite age.
The evidence from science seems to suggest that all matter and energy originated from a single point about 13 billion years ago called the Big Bang.
The past can’t be eternal, even if there was another universe that existed before the Big Bang. For example, if there were an infinite number of days before today, then time could never reach the present moment. But since today did happen, this shows that time must be finite and so the universe had a beginning.
Even if infinite universes did exist, they would still need a cause, and there can't be an infinite regress of causes.
we only exist in this one
How? Why? By design or just by chance?
because its one where we can exist
How is this the only one where we can exist? How was it fine-tuned through impossible odds to make life possible and by whom?
there could have been others in past
Could have suggests it's your guess, doesn't count for much.
since we cant see past the big bang there would be no way of knowing .
Yeah, because time and space started with the Big Bang. Before that, the physical quantities and constants didn't exist. Your multiverse infinite universes cannot stand scrutiny for the same reason.
The multiverse comes with a lot of baggage, such as an overarching space and time to host all those infinite Big bangs, a universe-generating mechanism to trigger them, physical fields to populate the universes with material stuff, and a selection of forces to make things happen. Cosmologists embrace these features by envisaging sweeping “meta-laws” that pervade the multiverse and spawn specific bylaws on a universe-by-universe basis.
The meta-laws themselves remain unexplained—eternal, immutable transcendent entities that just happen to exist and must simply be accepted as given. In that respect the meta-laws have a similar status to an unexplained transcendent god.
this loop can exist for same reason god can exist , there is no beginning or end . so no one has to create it .
I addressed this before, let's do it again.
The cosmological argument never says that everything requires a cause. It only claims that everything that begins to exist requires a cause for its existence. Since we have good reasons to believe that the universe began to exist (Big Bang cosmology, impossibility of infinite days before today, lack of maximum entropy), then the universe requires an explanation for why it exists.
God, on the other hand, never began to exist because he is eternal (he created time itself), and therefore God requires no cause for his existence. He has always existed; but the universe has not always existed.
It cannot be disputed that the universe began to exist. And whatever begins to exist has to have a cause or a creator.
IMHO we dont need god to justify existence.
You haven't provided a plausible and scientific alternative otherwise. God designing the Universe and humans is the most believable explanation.
Also, under your atheistic worldview, it really seems impossible to herald anything as good or bad. What gives you the right to stop someone from raping or murdering or cheating others? We are all just insignificant bags of atoms stuck in an infinite loop with no greater good or moral standard. Just a bag of chemicals stuck in a loop that will eventually destruct, so it doesn't matter what someone does to another in this life. Whatever happens just happens and has been happening since time immemorial.