What it comes down to for me is this; If I believe my wife could whip the two guys going at in the ring then I don't watch those classes. So far, i'm sure the only ones she can't whip are the heavyweights.

Being a former heavyweight fighter myself, sure, i've got a biased view of the other classes. But they are not without their uses. I remember many many times warming up with some middlewieght fighters back in the dressing room before our fights. I'd pick them up and curl them a bit, press them overhead a few times, and maybe use the longer thinner ones to use as a rope to skip. Sometimes my small sons would spar with them before their fights just to help them out. I'd make my sons wear 18 oz gloves so the middleweight fighters wouldn't get hurt too bad.