There is the argument that humans evolved a desire to have a religion because groups with more complex cultures were better able to survive difficult times.
It might very well be that religious groups have better survival rates. That doesn't mean that there is a god. Secondly, is that true? Sure, sure, the Jews are the only somewhat-example of that thesis. But other than that group?
And two, I really find it highly doubtful that some cavemen went like: "Look over there, those cobbers do the mumbo jumbo and they have more mammoth skins and two cavewomen for every man! Let's go and do this believing thing too!"
This begs the question how them cobbers overthere came to their religion.
Also, what you say might have caused the
spreading of religion but not the
origin.Religion leads to better organisation of your culture, better structure, unification etc. It has an unquestionable civilizing effect. Doesn't mean anything in the god exists or not debate.
