I absolutely do not like or trust any pit bull, but the only dog that ever bit me was a Labrador. I was about 11 or 12, riding my bicycle home, and the dog came out of its yard and got me on the right hip, just hard enough to break the skin. My dad talked to the dog’s owner, and I never saw that dog running loose again, though they kept it for at least a few years after that. This was in the days when people didn’t sue each other over any little thing.
Other types of dogs do bite people sometimes. The difference is their bite almost never kills the person.
I wouldn’t have a dog that i felt compelled to carry a sidearm around all day.