My old neighbor had a pitbull. The first time I ever saw it she came running down the street towards me as I was getting out of the car. I jumped back in and was trapped for 10-15 minutes before she decided to leave. Turns out she just wanted to play. Sasha was one of the friendliest dogs I ever knew.

The temperment of any dog has much more to do with its owner than its breed. The problem is that most, but not all, people who get pitbulls get them because they want a bad ass dog. Even if they're not raised to fight they're still raised to be mean bad asses.

It's like that old saying "Guns don't kill people, people kill people" Well, "Pitbulls don't kill people, Assholes raise pitbulls to kill people"