When we went to the Humane Society to adopt our dog, the Director ther helped us, and since "Bear" is part Pit, I asked the same question.
She informed us that she had just bought a purebred pit bull, because she has two small children and needed a dog that was safe with kids.
When raised properly, pits are the most loving and tolerent dogs you can buy. You can pull their fur, tug at their ears, mess with their food, and they will not get upset. They have gotten a bad rap, from the idiots who breed them for fighting.
During WW1 the army used to use German Shepards, and everyone was terrified of them as well, then it was Dobermans.
In response to your question, you have a wonerful dog. Love him, and he will be the best dog you ever had!
My next dog is going to be a purebred as well. Here is
Bear