Spanking is something that should be in the toolkit of parents, but it shouldn't be a primary tool. If you are spanking your kids every day, you're doing it wrong. It also is something that should become rarer as the kids grow older and better able to process verbal correction.
I was spanked on the bottom a few times and I turned out fine. There's a difference between that and being beaten.
@Dem: That's grasping at straws
@Maddy: Discipline in general requires some demeaning in it, one doesn't grow and learn if their spirit is not broken from time to time. And with some people, lectures and privilege taking are just not going to do it.