I consider it likely that among those reading this, more of you grew up in families of intelligent, educated people than the national average. It is also likely that the number of readers who grew up in liberal and nonreligious families exceeds the norm. Not all, certainly. Quite possibly not even the majority. However, I think there must be many among you who understand the shock of leaving your family and community, perhaps to go to college, and slowly discovering that there are people who don't think like you.

I think you are actually generalizing from one example about the tendency to generalize from one example here. :)

Or maybe it's just that I grew up in the South, but really, not until college?