Imagine A World Without Religion.

[System of Solace]

I remember a famous atheist talking about this same thing-almost. If all religions on earth vanished overnight, others would surely take their place. Completely different religions. It it simply human nature. If you are implying that religion would not appear again, then that is of course something different. Without doubt there would be much less hatred and conflict in the world. There is the possibility of some negative effects, but I could not imagine them being very significant.