I don’t think we have enough pit bulls yet. I’m doing my part by having one, but he’s neutered, so that’s not really much help in the long run. He is a real sweetie – was sent to the pound by abusive former owners, and it has taken me a long time to make him stop rolling on his back submissively when people come near him. My nephews and nieces play with him in the yard (under my supervision) and once they realize he will not hurt them, they stop being afraid of him. He likes to be patted and have his belly rubbed. (Maybe this is the wrong place to mention it, but my own favorite game with him is “burglar and attack dog”; he gets bored after a few goes, and won’t play this with anyone but me.) All big animals scare people a little, or they should. For that matter, little animals should scare people a little, too.
Seriously, if we’re going to start outlawing any and every thing that kills children in rare (or not rare), freak occurrences, let’s outlaw grizzly bears, swimming pools, buckets of water, bicycles on roadways, toys with small parts, household chemicals, poisonous plants, stoves, etc., etc., ad infinitum. As others have pointed out, some of these things actually do account for large numbers of deaths and injuries annually. Lots of things may or may not be dangerous to people, but that’s a part of living on this planet – facing unknown dangers. Sure, people do stupid things to create dangerous situations, but you can’t just go around outlawing or destroying everything that might somehow harm anyone.
Don’t even get me started on real dangers, like child abuse and neglect, accidental shootings, drowning, drunk driving, and auto accidents in general (I’m afraid SUVs will get me, and my little dog). There are way better things you can waste your time worrying about than whether or not my dog is going to eat your child. If you don’t want your child to be eaten by a dog (or drown in a bucket of water, drink bleach, choke on toys, etc), teach the child to stay away from all animals it doesn’t know (or other potential hazards), and teach it what to do should it unexpectedly encounter an animal (or potential hazard). A combination of caution and ability to cope with the unexpected will make childhood a lot safer. Common sense and some parental supervision would probably go a long way to preventing many accidental deaths and injuries, concerning a huge array of possibly harmful situations.
For the record, I’ve been bitten by a dog myself (when I was a child). It was a “friendly looking” Basset hound, and I was in its yard uninvited. As I see things, it was doing its job.