Tourette said:
When i was a kid my father beat me harshly on a regular basis, hence why I do not have anything to do with him and I vowed that I would never grow up to be like him.
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If you smack as a punishment, what happens when they grow up thinking that is the only way to control their own kids? It becomes a viscous cycle.
Really now?
Anyways. Many points were made along the lines of "be a good parent" and "needed for respect" and the like. I contend that it's needed for discipline. Children do NOT have self-discipline and any form of punishment that actually works will do fine. But you know what? It's a LOT harder to successfully ground a kid than it is to cuff their ear. Don't go crazy with it, but seriously, think of yourself as a child. When you got grounded, did you do your absolute best to get around it?
I sure did. I got to the point where I could tell if a parent was coming towards my room from any where else in the house. Stayed up waaaay late reading (6-10 year olds shouldn't be up past midnight on a regular basis, right?). Video games. Snuck on to my computers. All sorts of stuff.
On top of that built-in shaky grounds, you need smarter children, who are more likely to find ways around the punishment in the first place! Ones who can piece cause and effect together effectively and realise "man I wish I could do X, maybe I shouldn't do Y again." When a child gets caught with his hand in the cookie jar, that's grounding. When a child gets chased around by their big sister with a knife (true story, no I'm not the sister) maybe a 'grounding' isn't quite an appropriate response.
It's a complicated issue. Some parents just don't know how to hit their kids and do it when not appropriate (and/or with excessive force). Some parents find their kids don't need to be hit. Some parents do need to hit their kids, but won't.
Disclaimer: I hate kids. Bunch of greedy snot-nosed mentally incapable brats, and these days their sense of self-entitlement makes them even MORE unbearable. Goodness graces I sound like I'm twice my age.