I believe that the existence/lack of a god is unknowable. That doesn't mean that I stop questioning, in fact I am very open to people's beliefs. I too am curious, and I find it fascinating the spectrum that I have seen regarding beliefs of god. I have not yet found a person who has never thought about god. (By "god" I mean a higher power of some sort.)
Don't ever be sorry for asking questions. Only be sorry if you DON'T ask!