I'm glad to see a couple of thinking adults have joined the coversation.
Okay, if they are their own property at birth, why is it my responsibility to do anything? I know, rationally, that they exist as a result of my own actions, and that they will likely perish without my parenting. But if they are my responsibility, how am I not the slave, then? And what about my religious perspective argument "All children are God's children, and I'm his representative"?
Again, I'm not pulling these arguments out of my rear. All versions of the pro-corporal punishment argument that I have thus far presented have already been argued extensively by libertarian philosophers for decades. Pre-age-of-reason children remain an unresovled issue.
The "hot stovetop" example was used early on in this thread. It is morally acceptable to intervene to prevent damage to their property (ie, slap their hand away) but not to punish them after the fact. If your child is jumping (or about to) on a glass tabletop, it is acceptable to intervene to prevent damage by grabbing them off the table, but not to then spank them after the fact. Children are smarter than you think. As soon as they can talk, you can reason with them. You may have to use simpler concepts, but if you can talk to them, and they can talk to you, reasoning is possible.
Why is behavior conditioning not morally acceptable? You know, Myrkul, that stating your position, even repeatedly, doesn't an arguement make. As for reasoning with a toddler, this is possible & desireable under ceratin conditions and with certain children; but it does not apply to all situations or all children. I'm arguing that corporal punishment, used sparingly, is an effective method of behavior modification and that it's use (as a last resort) does not qualify as abuse. Others are arguing that corporal punishiment is always and in every situation abuse. That's an absolute position to take, and there are very few absolutes in the real world.
Tell me, what does spanking a child after they have endangered themselves do, besides instill a fear not of the dangerous situation, but of the parent? The child very much wants you to be happy with him or her, and simply telling him or her that going out into the road like that could get them hurt, and their getting hurt would make you sad will amply drive the point home that running out into the street is not something Mommy and Daddy approve of.
But what if simply telling them does not drive that point home? What then? If you do exactly as you say, and never utilize corporal punishment as behavior modification despite the fact that your child repeatedly ignores your verbal warnings of the potential for great harm, and he finally runs out in front of traffic and is killed. Have you, then, not failed as a parent? How is that not neglect?
If you want to raise self-owning adults, you should treat them as self-owning children.
Certainly as soon as that is possible. But what if it's not?