I don't hate modern music. I don't really *hate* music itself. But I despise some of artists who build their popularity not over how talented they are, but over controversy they cause with their attitude.
Today there are more of them than in past. We have Bieber, Miley Cyrus, in Poland most of popular artists do dumb stuff so that people talk about them. But their music is not a total abomination that it could be. It is catchy, but average. Made for person who does not seek anything deep in music and its only purpose is to fill pockets of record labels. This is not making music, but producing. And it goes for quantity over quality. Basically - those kind of artists are just business.
Even look on staff behind most of popular modern pop releases. It is enormous. And they are not gathered to give deep music. They just make bunch of catchy song that the musician will later sing.
But people make terrible mistake by judging entire modern music on this. It is beyond dumb to do that, because music is MUCH MORE varied than You can hear on the radio. Metal rolls exactly how it rolled in past. Same goes for rock. Electronic music too has decent artists. Don't act like some kind of experts who "know that only old music is good" - You look nothing short, but silly. You have right to dislike modern music but don't act like it is bad, because You don't like it. Your taste is not superior over for example my.
One of most narrow minded opinions I've ever read, no offence.