'Spanking isn't necessary (for YOUR children). Your two children do not represent all of humanity.'
But they do represent empirical evidence that spanking is not necessary to raise children.
The rest of your 'force' argument is so ridiculous that I'm not sure I should bother addressing it. Until you stop equivocating moving a child from place to place BECAUSE THEY CAN'T CRAWL YET and intentionally inflicting pain on infants, I can't really take you seriously.