As it says in Ecclesiastes

"All go unto one place; all are of the dust, and all turn to dust again."

I'd have to say that what you do is finally more important than what you think or feel or believe. At some point the motivation for your behavior is your business, not mine.

"But it does me no injury for my neighbor to say there are twenty gods, or no God. It neither picks my pocket nor breaks my leg."--Thomas Jefferson