Atheists - What drives you?

‘Proof’ doesn’t figure in science at all; no theory is ever proven correct, just accepted on pain of falsification. In fact, if it’s not possible to rule out a theory, it’s not considered scientific (by most).

You can be a Hindu, believing in the concept of Atman, i.e. the true, unchanging self, and a Buddhist, following the doctrine of Anatman, i.e. the non-existence of a true, unchanging self, only if you don’t really know anything about either.

The answer any religion gives to most ‘why’-question is: because god. The answer it gives to the question ‘why god?’ is typically: shut up.