My son and his family have 2 pit bulls. One is over 10 and the other is about 3. They have 3 girls 6-11. I too was concerned when they first got one. But he is the greatest dog!! He has been around since before the middle girl was born. I would get one myself but I rent and they are forbidden. There is a picture somewhere of the littlest one at maybe 1 1/2 feeding him his dinner from his bowl -- one piece at a time (and they are small pieces). He sat there and ate them without complaining until she grew tired of it and left. He then ate his dinner. The 3 year old is female and has a lot to live up to!! They have a bad rep. Again -- nature vs. nurture.
ps. I am their dog sitter, and can walk them both together with no problem!! It is the people who let their dogs run free that cause a lot of problems. Those little "ankle biters" get away with doing a lot of things because they are cute.