[Veto!]

Pit bulls are trained to attack. They’d probably be nice family pets if left alone.

[South40]

Pit bulls are trained to attack. They’d probably be nice family pets if left alone.

I have known people who owned pits that were perfect family pets. I have known people who owned pits that were trained attack dogs. It wasn't the dogs' fault, it was the owner. But you wouldn't want to be near either.

[Windflier]

Pit bulls are trained to attack.

Worse, the instinct to attack was bred into their genes from the outset. Read up on the history of the breed.