I know this is not universally true... BUT... A can of worms is begging to be opened.
Do parents who spank their kids understand that in many cases this is the ONLY thing to which their kids respond? In other words, adults (teachers, daycare, camp counselors, other relatives, family friends) who don't spank because they cannot (legally) or will not (philosophically/morally) have almost no opportunity to effectively discipline (read: teach) your kids. These adults, who really want to connect and love your kids, are put in an almost impossible position.
The most recent example comes from my DH who had to send a camper home early because there was no progress in getting this kiddo to behave appropriately. When I saw the behavior I said, "I bet his parents spank him and I bet there's no way you can get through to him because he knows he won't get hit here." Sorry to say that the spanking was confirmed by the kid's dad and, guess what? He has a hard time behaving in school, too. Will wonders never cease?
You choose how to raise your kid, by all means. But remember (s)he has to function in the rest of the world, too. And the thing is, there's no way to know when your child is wee if they will be the kind who gets a couple of whaps at home and then learns how to be a functioning human or if those whaps are the only thing to which they are going to respond.
And just in case you think the view from my high horse is obnoxious, I DID spank one of my kids once. It was completely ineffective and only made the situation way worse. I understand there are philosophies and cultures in which this is acceptable. I'm just saying... please think twice Or three or 10 or 1,000 times.
If not for your child's sake, for the sake of the people in your village that have to help raise him.