rap/hip hop/trip hop's place in metal

now many of us like rapcore and rap metal and stuff like that. I am personally a big fan of Insane Clown Posse and eminem.
I guess what I'm asking is why metal (and I mean metal not fuckin mallcore shit like Slipknot and KoRn, both of which are firmly rooted in rap) and rap have this rivalry. Both of them are trying to be more extreme. And frankly it pisses rap off that metal really is more extreme. When you listen to metal and then rap you find that rap is weak and simple. I ahve been listening to thy Light a lot and now when I listen to Insane Clown Posse its like going from Behemoth to Thin Lizzy. Just really really polar opposites.
Why is rap more simple then metal? Well I think, (remember this is my blog and therefore my opinions are the ones that matter, got a problem with that? Then comment on it) that its because almost all rap can be made on a computer and played off a syntheizer, which is something that many rappers do. Thats why they perform on an empty stage. Metal is harsh, raw, fast, animalistic and much more difficult to play. I don't know if YOU have tried to do ANYTHING while headbanging but tis nigh impossible to do without hurting yourself. I know, I've done it. And these guys play very fast guitarwork with chord changes every second and many times faster. You may not like black metal but they're drumming at an incredible rate. Rap is slow and takes almost no talent to write or rap.
Next is the vocals. Listening to Conquer All by Behemoth I am left to wonder how the fuck he does those vocals. I can't make a sound like that, you most likely can't but both of us most likely can rap. because all it is is smooth talking with rhythm. Thats IT. Anf frankly I am tired of being told that the lyrics are complicated, because they aren't. Although Saul Williams is an excellent writer, but he is more spoken word then actually rap. Just something to think about dude.

so there is some info on the VAAAAAAAAAAAST differences between these two "extreme" genres.