I never even thought about it but my music tastes are so diverse its incredible.
I like classical cuz of the complexity. It makes me actually think about things, even simple pieces like Erik Satie's Trois GYmnopedies. Everyone knows that piece but noone bothers to know its name.
I like jazz, esp African Jazz cuz of the beat. What those african jazz musicians do with the bass is just awesome. Artists like Salif Keita (what that guy does on guitar is simply...awesome) and Fela Kuti (plays sax and piano, freaking amazing!!!).
I like rock, esp teen bands like Relient K and Jimmy Eat World cuz of the great stories these guys tell. I can relate to a lot of stuff they talk about.
(might as well mention i dont like "hippety-hop" very much).
I love Gospel/R&B for the same reasons i like classical and rock.
But in the end its like what someone in a previous post said, i listen to what my soul relates to.