I would totally agree with lester_music's point of view. On top of that I would also want to emphasize that even your favourite artists/bands would listen to music of a different which you might dislike, but you'll never know man, maybe that's where they got their inspirations from.
To say a certain genre of music to suck or not is highly subjective, then another question would be how much do you know of that genre to be able to say it sucks? Of course there are alot of "blacksheeps" out there that created misleading impression of a genre.
And to really be able to enjoy and understand music, we need to break out of our "safety barrier" and broaden up our horizon to listen to all types of music without prejudice. It's kinda hard to accept it at first, but its gonna be good once you get it.
oh and another interesting things that happened to me was that, I started off listening to the "normal" music when I was younger, then gradually I went on to listen to the classic album of harder music like rock, rap and such, and at times goes by I got interested in classical music which leads to the discovery of experimental music in the vein of John Cage and John Zorn etc. and some Sun Ra concept stuffs. And Now, I went back to listen to the normal stuffs that I listened to many years ago, I managed to hear beautiful things which I never really noticed before.