So what happened to my friend Doug, and what happened to another friend's daughter are just scare stories? Right. These are dogs we're talkin' about. Not guns. Not people. Dogs are a reasonably intellegent animal, but they're still animals! These dogs were bred to fight. Bred to hang on till death do them part. You can't change the breeding by wishful thinking. It's as if you were to breed lima beans for a few centuries to be the best lima beans, but some expect them to taste like strawberries! It's in the breeding. Dogs can be great around their families, and be very dangerous to strangers. So one day your dog slips out the back door, and encounters a child riding their bike. Attack? Maybe not.
No, you have a legitimate excuse, dogs bite. Aggressive dogs bite more often. Is there an epidemic of dog biting in the US, or just an epidemic of MSM panic articles? Is this a reason to ban entire breeds? Do you really want to ride this bandwagon?