More than wealth, it is modern, secular education which causes people to abandon God. There are some countries like Saudi Arabia which are very rich, but which are still very religions. This is because the Saudis refuse to embrace modern secularism and prefer to stick to their primitive tribal mindset. Education, especially in the sciences encourages a rational and more skeptical approach to the world, which naturally leads to people questioning spiritualism and superstition (which they might not have done otherwise). There is a reason why most scientists are not very religious.
Secularism is the divorce of religion from the State in classical sense but in Modern terms the Pluralist interpretation of Secularism and Atheist interpretation of Secularism in both sense it is NOT possible in Islamic Country. Secularism is NOT about "Tolerance" but its about "Mutual Respect" which seems to be less possible in the Islamic countries. Even turkey is not following any "Tolerance" or "Mutual Respect" or "Divorce" of Religion from State.It follows "
active neutrality".It means as it is
actively neutral it still can interfere into religion.
Secularism
{
West ==>can't interfere into Religion at all
East ==> can interfere into religion as "Tolerant" "Respect"or "Actively Neutral"
}
So States "seems" to be Secular in East but it is NOT. Turkey is different in a way from KSA with freedom of religion but it still has all the power to "interfere" into Religion unlike USA. Its all shoddy Secularism..
Everything is not white and black.
Take the case of Turkey,it is influenced by Western Ethos but it still holds Islam in belief of the people.
Turkey's "laïcité" does not call for a strict separation of religion and the state, but describes the state's stance as one of "active neutrality."
The current Constitution of 1982 neither recognizes an official religion nor promotes any. This includes Islam, to which at least nominally more than 99% of its citizens subscribe
If KSA == Rich == Turkey , one Secular (in some sense) and another is NOT still people are vastly religious.
What I wanted to point out was less Spiritualism != More Wealth; but may be :: More Wealth == less Spiritualism.
http://downloads.unmultimedia.org/radio/en/ltd/mp3/2012/unradioclassicsdownwithdragons1959.mp3?save listen it if you want to understand East and West cultural values its from UNESCO