I used to believe that until i actually spend time around someone who had the strength of will and patience to only discipline with natural consequence. I have to say though, sometimes a quick spanking would have been more merciful than some of the stuff that kid had to go through. But as a consequence, they had saved up money to get their own place right out of high school, and had a thriving business by 22.
I tried to talk them into teaching on parenting because they were so good at it. But it’s not for the weak, and takes incredible discipline. Spanking is the easier road.