The reason you are not entertained is because you are totally ignorant to the finer points of mma combat. I've seen some incredible and highly technical ground wars get booed. I was highly entertained and they need to stick to watching WWE.
Also, your point accepted Atom, how do you explain all the booing that goes on during the fighter introductions? Go ahead and cheer for your guy, but to diss the other dude is just plain rude and unacceptable.
Here in canada at least, we don't boo the opposing team and we applaud when we see a display of skill, like an awesome goal, no matter which side did it.