You people should realize that good and bad is all perception. Not to mention that no teenager these days wants to hear about how all those "dinosaurs" are better rappers than the stuff they listen to.
But in my opinion, I have to agree that "lil wayne" and all those mainstream rappers honestly suck. You wouldn't have the whole rap subgenre without hip-hop, and you wouldn't have mainstream hip-hop without the underground, real hip-hop.
If you want some real rappers emcees, then find yourself some songs by these people:
Aesop Rock
Eyedea
Mr. Lif
Sage Francis
Cannibal Ox
Slug/Atmosphere
And to those saying "rap" isn't music, of course it is. It's just that all the new crap is just about catchy phrases said over and over again to wack beats. And it's not all about catchy stuff, and what sounds kind of good. It's about the meaning behind it, and good beats. But if you don't like that, then it's not a big deal, it's just your preferences.
And lastly, to those saying that this kind of music is dirty for 13 year olds, where have you been? It's been like this since I was in elementary school, it's not weird at all. It's just something that becomes popular.