Congratulations, you're getting older.
No, I don't think the desire has gone away at all. You just don't dig modern music as much as the classic stuff, or hang out with people who do, so you don't recognize the desire to listen to underground bootleg recordings of those artists. I have friends who love to dig for the studio sessions and weird side projects of their favorite new punk and rock artists.
My father didn't think Nirvana would have any staying power either, and his father said the same thing about Elvis.