I hate that it's so often assumed that atheism is some big rebellious statement against the organized religion of one's youth. I've had this conversations more times than I can count:

Person A: "What religion are you?"

Me: "I'm not religious."

Person A: "Yeah, yeah, but you know what I mean. What religion are your parents?"

Me: "None."

Person A: "But...what kind of church do they go to?"

Me: "None. They're not religious either.

Person A: *blank stare*