Like Christoph said, this has been discussed in hundreds of different threads on this forum so far, so people kind of get tired of hearing about how todays music scene is crap. Personally I don't have very much respect for much of the bands that are making it big now, but in my years at this forum I've gradually come to accept that instead of bashing a band, you should critique it. It's ok if you don't like it, but don't generalize by saying its crap. Try and find something interesting in it, because it will make YOU a better musician in the end.

I went a punk concert last night (I really, really don't like punk and my ears are still ringing), and experiencing this form of music can only make me a better musician. For instance, I learned that a good punk player can play DAMN fast. Not single string blurs like artists of my preferred style, but palm-muted, low string "chunking" type of stuff. It impressed me. I thought "Man, if I showed this guy some stuff he could be a vicious shredder".

Moral of the story, be mature about it. You don't have to embrace the new scene but try and learn from it.