yours and beatles' generation not liking a lot of modern music could be remeniscent of your parents not liking the new music in their time... maybe its just a thing that happens... i mean, what im trying to say is... your parents and their generation could have been saying exactly what your all saying now...
I think that's
always the case with every generation. My dad used to come in when
Top of the Pops was on and say "what's this rubbish?" (he'd wait until the end of the song when Pan's People or Legs & Co were on though!

). As you get older you
try to stay in touch with new music, but simply because you've been around a long time everything starts to sound like something you've heard before - it's hard for me to get excited about Oasis or Bloc Party or Trivium or the bloody Libertines because they just sound like recycled versions of things from 20+ years ago.
But, in (sort of) defence of new music, I think the things you like when you're 15-20 have more impact than things you get into when you're older. It goes deeper somehow. My musical tastes may have broadened, and I may lose interest in stuff I bought only a year or two ago, but I know I'll
always love those old Purple, Sabbath, Rainbow, Rush, Scorpions and Robin Trower albums (mock me if you wish). Even if new stuff is "as good" as those bands, it won't seem like it to me. I'm the wrong age to be receptive to it.
I'm going on a bit, but finally, there'll
never be another band that has an impact as big as the Beatles. "Pop" (and rock) may be the music of the young, but Pop itself is middle-aged and flabby. There's nothing revolutionary or innovative about it any more. There are just too many bands in the world for any one to really stand out. In 1962, the older generation had no comprehension at all of what was happening. It was earth-shaking that young men grew their hair past their collars. The record companies let artists do whatever they wanted because they simply didn't understand what they were up to. That can never happen again - us oldies may not
like what the kids are into, but it has no shock value because the music itself is much less revolutionary than it was 30 or 40 years ago.