Because he loves us! Well, that's what John Piper douchebag, oh I mean Pastor, of some mega church says. Actually, what he says is that you should spank your own children 'cause that's what jesus would do. For example:
The very word "spank" exists because there is such a thing as a loving way to whop a child on his behind or his chunky thigh.If god did not want us to spank our children, they wouldn't have such deliciously chunky little bottom's. He also says, "Spanking is so clean! It's so quick! It's so relieving!" Which doesn't make sense to me on many levels. (1) what the hell does "clean" have to do with anything?!?! (2) yes, most forms of child abuse are quick - cause they are done out of anger. And (3) who the fuck is relieved?!? That is so messed up. You are relieved because you hit your kid? Or the kid is relieved that your tirade is now over?
He has some biblical shit in there about how god makes us suffer because he loves us and therefore you should make your children suffer, if you love them. SO bottom line (hehe) is that you must hit your children if you love them! In the name of god!