I have no idea what happened with me. Everyone in my family listens to country music, except me. I remember never liking it. And for some reason, without any influence from any family or friends (except maybe when my friend showed me hardcore music), I listen to death metal. But that's not all I listen to. I like:
Melodic Death Metal
Technical Death Metal
Death Metal
Deathcore
Metalcore
Hardcore
Grindcore
Deathgrind
Doom Metal
Drone Metal
Power Metal
Viking Metal
Folk Metal
Heavy Metal
Thrash Metal
Neo-classical Metal
Progressive Metal
Symphonic Metal
Alternative Metal
Punk
Celtic Punk
Industrial
Hard Rock
Alternative Rock
Grunge
Reggae
Techno
Classical
Blues/ Jazz
and any fusions/ crossovers of those genres
That's what I can pull off the top of my head. As you can see, I really do not like Rap, Hip Hop, Country, Pop (most anything pop, somethings I can stand), Black Metal (I only like a few of them, not enough to say I'm a fan), Disco, etc.
I'm open to most kinds of music.