I refuse to recognize Hip-Hop as music. I mean sure, it's got a beat and you can kill cops to it, but it's still lacking something.
I used to feel the same way, but mainstream hip hop (which is probably all you've experienced) is as bad as mainstream rock. It's shit. Very rarely do the unwashed masses have any taste in these things.
However, I suggest you grab Cannibal Ox's "The Cold Vein". I really couldn't stand Hip Hop until I got into that album. The instrumentation is absolutely fantastic, and the lyrics are very clever and make use of irony and all that jazz you don't see in tv-friendly hip hop. The final verse of Iron Galaxy especially is amazing. The lyrics are wonderful, the delivery is perfect, etc etc.
I come from a rock background myself. I play guitar in a metal band. But I was kidding myself when I thought Hip Hop was some kind of exception and didn't have the sliding scale of musicianship that other genres possessed.