> Whats the difference between your hand and any other tool?
My hand is attached to me, and it provides direct bio-feedback on the amount of force being applied. Any other tool or weapon (eg belt, switch, stick, wooden spoon, whip, cane, &tc) does not provide this bio-feedback and is therefore dangerous.
> Do you really think the child (or animal) cares what they are getting hit with?
I suspect the child would rather not be hit with anything — and if the child doesn’t misbehave then it certainly never shall. And I suspect the child would far rather be struck with the hand (you know, the hand with built-in bio-feedback to make sure it doesn’t strike too hard) than with a tool or weapon like a belt or cane.
Ah...so if it hurts YOUR hand, you know you're hitting too hard. Again, spanking is a tool used by parents with limited skills and probably limited time. Good luck with it.