I have noticed for a long time people who don't have kids of their own tend to be 110% against "spanking"...I think it is an interesting subject.
No you haven't. Lots of people without kids think they should be smacked around. Psychoslice doesn't have kids (a confident guess), and he's all for it. Father Heathen also defends corporal punishment regularly, and had no kids or plans to have kids. Mystic has a busload of kids, and is entirely against it. My mother and grandmother are both against it, having been raised to believe in it and realized on their own that corporal punishment is child abuse, and terrible advice.
If you think the line between "people who want to hit kids" and "people who don't believe in hitting kids" is as simple as having or not having them, you have not been paying attention at all.
You're also disregarding the fact that a good chunk of us who are totally intolerant of violence toward children are TEACHERS. We handle
dozens of kids at a time without the need for violence. IME, most teachers are much, much better with kids than most parents. Parents should be asking us for advice, not telling us how to handle kids.