Smacking children

I was smacked as a child, infrequently, but for crying at night. Probably a few of us were, for various reasons I dare say.
My parents loved me and brought me up as they had been, as a caring, sharing child.
I smacked my son.... once, on the back of his legs. He was so stunned, he never pushed his luck again.
He is a strict, loving dad to his kids, now, having said he knows the value of his boundaries. My grandchildren are not smacked.

The Welsh assembly is about to vote on this subject tonight.

To smack - or not to smack, that is the question.

Your views?