labont865, I think it's a losing battle which will affect a lot of dog breeds, and it all has to do with money and tort reform.
Insurance underwriters can exclude dog breeds or those with certain physical characteristics (if it looks like an APBT, smells like one, you know..). It's 100% legal. The insurance lobby is pretty strong, and I would be willing to bet that the majority of insured clients who don't have these dogs would all come together to exclude APBT (or similar "breed type") owners from a pool of hazard or homeowners insurance clients just to get a much lower premium rate.
Large cities can't afford the lawsuits that come about when a kid gets attacked by a stray APBT / Presa Canario / (insert pit-bull-looking breed here). Why the city gets sued is beyond me, but it happens all too often (tort reform!) It is much easier to outlaw any dog that looks like them to reduce municipal culpability, which is why we have the laws that we have.
If you buy homeowner's insurance or an umbrella policy, read the exclusions! The APBT is classified as a "breed type". In short, if you have an incident with the dog, even it is only 1/16th APBT or equivalent "breed type" by displayed or documented breed purity, you can find yourself without an insurer by your side in court. Dog bite lawsuits pay out big dollars, even if it was a gentle dog that never bit anybody before, but only reacted because of some provocation. We may not like it, but those are the facts and no amount of demonstrations, dog shows by conerned owners, and other informative means have never changed that. Your informative poll is just a small plug in a leaking dam of bad information. If anything, momentum against these breeds just keeps getting stronger.
It's kind of like the non-native fish species that make it into our waterways. The easy way out is just to ban many species of fish from importation or sale. The big difference is that few fish look "threatening" (w/ the exception of Pirahnas due to cinematic exposure), so they have more "friends in politics".
APBT's and smiliar "breed types" have absolutely no friends anywhere except for concerned owners like you. They simply aren't "cute" like many tropical fish.
Kind of like rats and whitetail deer in the U.S. Whitetail deer have reached plague population levels in many states, costing over $1.5B per year in auto damage alone (doesn't include property damage from other means by these deer). Although there is no outcry to halt killing rats, nobody wants to see "Bambi" take an arrow or bullet to cull the excess. Whitetail deer are simply "rats with great public relations."
These dogs are on the opposite end, unfortunately. They have very little PR help except from people like you, labont. GSD's bite many more people each year, but it's not hard to get insurance w/ these. Hopefully you'll go to bat for our aquarium hobby when the public at large threatens that, too.
v/r, N-A