There are other breeds that bite people more often than the "pit" breeds. Sure, even labs have more bites on record than pits. But that's a big non-sequitur.
Lots of dogs will bite or nip at a threat... in the traditional "fear-bite". But that's not what we're talking about here.
Pit breeds don't just "bite". They attack to kill. They don't nip at a finger. They grip, hold and shake the throat in order to tear arteries. Pits fight to kill. It's not anything else. It's what they do. It's why they exist.
Lots of little terriers bite people, along with the occasional lab or shepard. But that's not what they do for a living, and when they bite it is meant to frighten, not to kill.
Pits fight to kill. It's what they do. Any pit that hasn't killed during its life must only be prefaced by the term "yet".
Do me a favor. Climb over a junkyard fence tonight. When (if) you come back, I will bet you will have changed your mind.