Anybody who thinks spanking is bad should read Starship Troopers.

Allow me to quote:

"...the time tested method of instilling social virtue and respect for law in the minds of the young did not appeal to a pre-scientific pseudo-professional class who called themselves 'social workers' or sometimes 'child psychologists'. It was too simple for them, apparently, since anybody could do it, using only patience and firmness needed in training a puppy. I have sometime wondered if they cherished a vested interest in disorder -- but that is unlikely; almost always act from the conscious 'highest motives' no matter what their behavior."

And you thought it was just about killing bugs.