My point was, TL;DR
The are a very small minority of kids who need a literal firm hand and a majority of that small number never actually get it and they grow up into psychos because they were never taught empathy the only way it can be taught to that select few (As Anji suggests).
The vast majority of kids who receive corporal punishment/spanking/whatever you want to call it...get it
far too much. Certainly disproportionate to what was called for based on their actions. And it negatively impacts them (literally and figuratively).