None, I can at the very least appreciate every music genre. Take Micheal Jackson, for instance. We all know the terrible things he did, but look at what his music did. Inspired millions, paved the way for countless artists that came after him. I tend to look at the music itself and what kind of message it has, not the artist if that makes any sense.
I guess what I'm trying to say is don't dis other genres. You have no idea what artist could have used from a particular artist you don't like and you love the song.