Erm, I think you need to do your research, m'dear Deborah. Live and dead feeding, as well as WHERE you feed them (feeding tank opposed to their own cage), do factor in rather a lot as to whether or not your snake will bite you. Any snake. Period.
@Nixer: Even if I did have 50 balls, I couldn't see not giving them limited handling time. But then, I believe in snake breeding in the same way as most view canine breeding: breed violent canines, probably going to have a violent pup. Breed violent snakes, probably gonna have a violent clutch. That and if I were to start breeding, I would do it not only based on those oh-so-pretty colors, but also on whether or not the snake had a decent temperament. But that's just me.