I like Western classical music (unless it's bad), and traditional ethnic music of most cultures, though Klezmer and some Irish folk music start sounding too jumpy after a while...
there's really nothing I hate, except maybe monotoned, angry, bashing hard rock. And, maybe I've been angry enough to even enjoy that, once or twice.
I loved contemporary and old folk music several years ago, then got very tired of it and wouldn't even listen to it. Basically, wouldn't listen to anything. Now, after listening to my daughter and her friends -- who seem to all (usually) prefer very aggressive, bashing, angry crap -- I've come running back to the music of gentlemen and ladies, i.e., folk music.
I'll add that my daughter does also like other music...she and her friends just don't happen to play it.