Boas don't really bite much, especially when they're adults. I've had my 5 foot boa for almost a year and she got me once during feeding time, it didn't hurt at all as it was just a mistake. If they actually bit and held on, it would be painful, but that is a rare occurrence because most bites are feeding responses.

In my opinion, if you think you're going to be scared of handling or feeding your snake, you should probably reconsider whether you're ready to get one!

Overall, bites aren't as bad as people make them out to be. I was kind of scared about it at first, but once I got my first bite (from a BP) I realized it wasn't at all as scary as it sounds.

If you're getting a baby, you don't have to worry about bites from big snakes. As you raise it up, hopefully you'll learn its body language and temperament and won't have any aggression issues. Good luck!