Spanking is a great thing if it made you stronger and healthier than what not being spanked would. But since there's no way you can predict for sure which side of the blade -|+ your child will tilt over to, then avoiding it seems safer. Even if that means in many cases, children would actually benefit more from it, than without it.
In Norway it was forbidden sometime in the late 80's I think. My older brothers were spanked, I wasn't. They say that's the reason I'm a millennial and they're not
When I saw my brothers being spanked, I didn't see it as my parents hurting them, but causing them the pain that they needed in order to learn. My parents disliked doing it, it showed in their faces. The reason for spanking my brothers, were only when they had put them selves in dangerous situations, to insure they wouldn't do that again.
From the time physical punishment became illegal and up until now -
the people with the least mental issues nation wide, are those who grew up before the new law and the parental guidelines that came with it (positive reinforcement was a big hit in those guidelines).
I'm very sceptical about parental guidelines, teaching morals and propper behavior in school, and teachers practicing new and "improved" methods. If everyone are to be given the same treatment, then everyone has to be treated differently. If they're not, we have a serious personality crisis.
Another thing is culture. If one thing is normal in one society, the individual is less likely to be damaged from it.
So, I wouldn't spank my kids (if I had any), because it's not normal here, it wouldn't even cross my mind.
Want I do think is lacking in schools etc, is physical guidence. It's not fair to the children that grown-ups that work around them aren't allowed to help them set boundaries when words don't work. Kids can't regulate their emotions while they're in their developmental age. It's the grown-ups around them that has this job. It's natural and healthy to be touched, grabbed, held, steered in a direction. Kids are begging for boundaries. Taking this away leaves a lot of emotions unregulated, and that's not healthy. Don't know if it like this in other countries, but it is here on the North Pole.