Dad almost always hauled us to the bathroom, by the method my brother and I still call "the Spock Shock" in honor of the Vulcan neck pinch thingy. We made so many trips to the back...usually for fighting over an arm rest or something. A couple of older sisters tried to plead with my dad about his regular beatings of us. My dad's reply was - and I quote: "Kids are like sugar cane. To make 'em sweet, you gotta beat the pulp out of them."
That sums up my dad's theory.
When I had kids of my own, I was pretty hard on them at the time. It's all I knew. It shames me that I spanked a child for being fidgety at the meetings when I was bored out of my skull too. I have apologized, but it still saddens me to think how easily I was influenced by this mindset.