I think I'd have to say country music is my least favorite. I don't really hate all of it, but overall, I like very little of it. I especially don't like the really whiny stuff. I like music that is upbeat, not stuff that makes me want to cry. What about you?
Country and Metal (Screemo included). Dubstep and all EDM types are borderline, but some actually are good remixes and there are pretty impressive original stuff occasionally.
The most recent type of music I'm starting to largely hate is modern American pop music simply because it lacks in talent and quality from a composition, production, and execution standpoint. It's that simple, it's just pure shit that takes advantage of radios playing it non-stop to get it stuck in people's heads. Honestly even Japan, an island that had been isolated for thousands of years and is famous for producing some of the weirdest shit ever can produce better pop music than America. GG
Pop music because Capital FM is now always One Direction and Justin Bieber. I am now tuning into Smooth Radio because the music is nice and soothing.
I also hate Parody music (especially those cringe-worthy minecraft ones lol).