I do acknowledge that the power these breeds have can be a danger and that they have different triggers than other breeds. But I feel that it is important to educate people on the dangers of irresponsible ownership of these dogs rather than just writing these breeds off as dangerous and banning them. Yes, they can be dangerous, when handled improperly. If a person doesn't have the ability to handle one properly, they shouldn't own one, or any dog, for that matter. These dogs become dangerous when in the wrong hands, they fall into the wrong hands when people only want them for their ability to overpower/dog fighting and their ability to initimidate. These are the wrong reasons for choosing one of these breeds.
It's a problem because too many people get dogs for the wrong reasons. It's a problem because too many people don't feel that animals deserve the same care that people do. It's a problem when people only want to own these dog because of the "cool factor" and then leave them chained/penned up. Dogs should be raised like one would raise a child, if you don't teach a child what they are supposed to know, they won't know. The same is true for dogs.