Rap and R&B - I dislike Dubstep just because it's like the same shit over and over. Gets old. But when you talk about rap, it needs to be actually the good shit, and not no fucked up artist that kills the name of rap.
People that hate on dubstep because its repetitive or bland must not listen to very much rap. Or very much dubstep for that matter either.
Stop trying to give legitimate reasons for why you dislike something when you havnt even tried it full yet. If you dont like it then fine. Thats called an opinion. But when you try to prove your opinion right, you wind up looking like an ass.
tl:dr, music is based on opinion, and people that try to justify why their opinion is right and others' is wrong is stupid. If you like it then fine. If you dont then fine.