Interesting. Over the years, I've had several friends who were preacher's kids, but that's not why the reference slipped into this story. That, particularly the anecdote about "You're going to Hell," came from I guy I was working with when I was writing the book.
My closest friend for a long time is a preacher's kid, and in college she rebelled. But it was within a relatively conservative framework. She's still a very good friend, but we live on opposite sides of an ocean, so I don't see her very often. And, for all the good work she's done over the years, she may as well be a preacher herself. As you said, the behavior is bred into you.
Thanks for writing.