You are simply ignorant of your own ignorance.
Do you think having a single child works tha same as having four close in age? It doesn't, and you don't even have a clue.
I believe that it is not necessary to cause physical pain to make a point. Okay, my son is younger than your child. Does that somehow invalidate my point?
You just don't get it, do you? First you still equate spanking with beating. You've never seen spanking done properly so you can't imagine anything other than some woman in the grocery store grabbing her child by the arm and swinging at the child's diapered butt with her bare hand.
Then you don't understand that your child raising experience is fairly narrow. You've got 7 years, I've got 19, 17, 15, and 13 years. Do you now see that maybe your single 7 year old experience isn't statistically significant enough for any general conclusions on child discipline and punsihment?
Let's face it, the ink on your parental credentials is still wet.