Brian, for what it's worth, I do get what you are saying about the nostalgia thing, though I see it a bit differently. To me, it's not so much about the music itself, as you seem to believe, but instead, about the various types of individuals.
I tend to place those types into two categories:
1) Those who tend to only want to hear what was popular back when they were in high school or when they were out clubbing. Once they moved on, the music pretty much stopped for them. They are the ones that stop in here on an odd occasion looking for a password or maybe a show date for a rare night out to see a band. Totally irrelevant in this forum and not worth the rant.
2) Essentially the same sort but for some reason have their hands involved in booking shows, music programming or any other sort of power or control with what gets offered to the public. Usually not a part of this board but worth a beef or two. Exactly the very same sort that I see at work who book shows and don't seem to have a clue that there are more than maybe three genres out there. Also, only book shows for old people (my age and older); which means music from their heydays; or kiddie music (for kids even younger than you), which means Disney crap. Sometimes I sound like you when I privately lament that they book or play something from this millenium that isn't Country or Disney!
The point is, recognize the difference between those who just happen to like older music mixed in with their newer selections as opposed to those truly stuck in the past.