One doesn't have to be a scholar to observe that something is terribly wrong with the most intolerant sect of people in the world. That being said, it is untrue that every man and woman of this creed are disagreeable people, most of them are quite passable as normal human beings just like everyone else. However, in matters concerning the faith, all of them are fanatic. Being devout is one thing, being fanatic is quite another. Waging wars against others without provocation, as was the scenario in the last millennium, hardly shows anyone's devotion in good light, save for the devotion to bloodthirst perhaps.
Clearly something is very wrong with the Islam which is or was in practice, if not in theory.