I have to disagree just a little that it's strictly a matter of training to see isolation from less intellectual elements of society as a sign of superiority. I've seen it work the other way around: intellectuals really don't enjoy the same things, most often because they tend to lack the element of intellectual stimluation that intellectuals enjoy, and non-intellectuals take that as a snub, whether it was intended snobbily or not.

I will, however, concede that there's a lot of poser faking in the high-brow crowd, and an equal amount of waving around how bored someone is by the dull commonness of some event or another. Like all poser faking, that's just ridiculous.