I voted yes. Like john voight, I own a female pit/lab mix. She is very sweet and extremely smart.
She's also built like a tank, 60 lbs of pure muscle. She has jaws of steel. At 10 months, it is now very difficult for me to separate her jaws if she has something she shouldn't.
My wife and I do not let small children <~7 yo pet her without her leash and prong-collar on. Although, I'm 100% certain that I wouldn't let a small child pet any sized dog I owned without at least a leash on.
My brother was attacked and bit three times by a golden retriever. He has scars on his legs now. The most aggressive dog I've ever encountered was a daschund who attacked my pup and bit my hand. I couldn't get the dog off me until I picked it up by the scruff and shook it. Owner says, "But, he's such a sweetheart."
Just be careful out there, folks. The reality is that the breed matters far less than its training, disposition, and general exposure to the outside world.