I also don't own a pit, but you're absolutely right. The pits we read about in the papers as attacking kids or mauling people generally lack proper training (training that ALL dogs should have, by the way...I'm not singling out the pits!), and that's not the dog's fault--it's the owner's responsibility.
I also know folks with pits, and they can be the sweetest dogs...people just get scared by the breed because the only information they generally get is the negative stuff they hear in the press.
The downside for the poor pit is the fact that a characteristic of the breed is its strong jaws and the ability to do some serious damage if provoked. Ironically, this is a characteristic the animal was specifically bred for. Once again, this is not the dog's fault. It's just such a powerful breed that if it's NOT trained, and if it's NOT well-socialized, it's an issue. If a yorkie isn't well-trained, it can't do as much damage as a larger breed.
I absolutely feel badly for all pits because of their reputation. And the owners! I think they really need to have a thick skin about it, and probably the best thing you can do is to get out there and show people YOUR awesome, sweet, well-behaved dog so that they can get past the stereotype of the 'vicious pit bull.'