Rap sucks. Metal and Rock for life \m/ \m/
I don't think rap "sucks". It is, by no means, my favorite music genre, but it has its place.
In this modern age, sadly, most rap "artists" lace their music with trash lyrics, a simple beat, and a truckload of autotune (*cough Minaj, Wayne, Drake *cough*).
However, there are artists like Tupac and Hopsin, whom are actually very talented at what they do. Again, it is certainly not my "go to" genre, but I don't think it's bad. It's a very expressive, poetic form of music.