We raised pigs for about five years. As a general rule, in my opinion, the more you have the more crusty sows you'll encounter. Ours farrowed in metal crate, though, so of course they cannot get out and get you. If you have a pig, like any other animal, you have to use your head. I loved them, but we've got enough going on I wasn't too sad to see them go. We'll get a few weaner pigs right directly so we'll have meat, though.
When I was real little my pa would not let me near the feeder pigs. I remember that clearly. Of course I just wanted to squish the Piggy’s XD