CBS Sportsline has an online article called "Debunking Ultimate Fighting Myths." It's an interesting read for those who may be concerned about injuries and brutality of MMA-related sports.
It should be noted: MMA fighters are impressively skilled and, in the professional organizations such as PRIDE and UFC, the referees will not let a guy simply get the crap kicked out of him. These are not no-holds barred, bare-knuckle grudge matches. If someone ceases to intelligently defend themselves, the fight is stopped. Interestingly, the level of respect and sportsmanship shown amongst the fighters is practically unparalleled in any other competitive sport I've seen. (I will say, there are some tough-talking jerks, but for the most part...)
This is definitely a sport that needs to be regulated, but as far as I am concerned, it is no worse than football, boxing, basketball, wrestling or any other push-your-body-as-far-as-it-can-go endeavor.
Of course, if you don't care for it, that's entirely your right, but don't interfere with my right to admire the abilities of such skilled and dedicated athletes.