I have an atheist up the block and have shared several libations with him and his wife. He works hard to keep his ideals which really means walling off the other thoughts, I believe. His parents were hard Baptists, I think and it seems that his upbringing created the reaction in him called atheism.
It sounds as though he is making a good life for himself and his wife.
It also sounds like he doesn't have a need to surround himself with only the people who agree with him about religion?
Yeah, blaming your folks or your childhood for your denial of truth doesn't cut it in the real world. Eventually one day the world comes crashing in to destroy your house of cards. Then you're faced with an inescapable choice, to accept or reject Jesus Christ as your Savior and Lord.