Yay, I knew quisling and even came across it recently to refresh my memory (but can't remember where).

I too am an athiest raised by athiests and yet knew the basics of Christianity from early on (although like you I'm not so solid on the specific practices). It seems like it would be hard to avoid with even a *shallow* knowledge of history, art, or literature. Being ignorant of a major component of western culture doesn't seem like something to be proud of.

I've definitely seen more shocking examples of ignorance, but yours are particularly troubling because they all from the supposed educated class.