It irritates me because what I've heard I consider mindless rubbish created by talentless people who are under the illusion they're someting special. The artists come across as arrogant and that's not something I find attractive.
It also irritates me because the music conveys no emotion I can relate to. Maybe if I was living in a rough city dealing with guns and crack and harassed by the police every day I could connect to it, but I don't, I live in a tiny village in the Welsh mountains. I have no interest in guns, Gucci, Mercedes, violence, dollars and bitches. These things mean nothing to me. I consider them shallow topics not worthy of my time.
Lastly, and most importantly, I just don't like the sound. Give me pianos, cellos, violins, acoustic guitars and oboes any day.
Hehe, yeah, I was joking.