I was a submissive and compliant child. However, my brother was not. As difficult as he was, though, he never once hit, kicked, or bit my mother or father, or any other authority figure. I think that is probably because as much as my brother tested limits and boundaries, there were certain limits and boundaries that were established very early on, and we both knew better than to violate them.
My mother has been a school teacher for over 20 years, in a poor school district with many "problem" kids, and she has rarely had students who acted in this way. Those who do, generally speaking, have come from homes where "parenting" is not really what parents are interested in doing. She has little experience with the wealthier end of the scale, as do I, so I can say little about kids who come from more normal homes and behave like this. In my experience, kids who come from "normal" homes don't behave like this, when boundaries have been set and discipline has been used accordingly.
And no, I don't think my parents -- or any parent -- would be justified in "beating the crap" out of their children, for this or for any other reason. That being said, cheerily saying, "Good for you! You didn't hit me this time!" in my opinion, does not send the right message to the child. It teaches the child that while hitting and kicking are discouraged and frowned upon, it is not something outside the limits of behavior parents will accept. I can't imagine my parents ever saying, "It really hurts my feelings when you hit me." The point isn't that it hurts their feelings -- the point is that it is not acceptable behavior in our society to hit our parents, our siblings, our friends, our authority figures, or anyone else.
In the real world, hitting or kicking other people, especially a figure of authority, is absolutely 100% NOT an acceptable behavior, and you will suffer extreme consequences if you do so. At school, it will get you expelled. As an adult, doing this could get you fired from a job, slapped with a lawsuit, charged with assault and battery, arrested, and possibly thrown in jail. Assaulting a police officer, the most extreme case of acting out against an authority figure, is a very heavy offense. These are, in our society, extreme behaviors with extreme consequences. I would no sooner hit my mother than I would murder a stranger. In my mind, they both come from the same pool of extreme behaviors that are beyond conceiving of committing. Therefore, these behaviors were discussed in a way that made them completely intangible to me. I could argue with my brother or not share my toys -- these were bad behaviors wherein treating my brother nicely and sharing were preferable, and I was both taught the importance of the right behavior and disciplined (the severity dependent upon my actions) when necessary. I could not hit my parents. EVER.
Had I ever done these things, I don't know what the punishment would have been. However, I can guarantee it would have been severe (a "beating" not at all what I meant), would have been long-lasting, and would have been something I would not have forgotten. Then again, my parents had taught me long before that it was not permissible behavior, and so there was no retroactive punishment to be meted out, because I knew there would be very severe punishment, unlike any I had experienced before.
I think modeling, encouraging, and re-enforcing good behavior in your children is one of the most important things you can do for your child. At the same time, establishing limits and boundaries, setting rules, and clearly defining what behavior is not acceptable or permitted is equally important. In order to have your child behave as he or she should, they absolutely have to know what they should be doing, and it is up to parents to make each day a lesson in good behavior. But if you fail to provide discipline when your child transgresses the boundaries of acceptable behavior, or even make it seem like those transgressions are somewhere in a gradient of behaviors that range from good to acceptable to merely frowned upon, not forbidden, then the child will think it is an action he or she CAN do, with only minor repercussions.
I guess my point is this -- because my parents set strong and clearly defined boundaries, it never even occurred to me that hitting or kicking my parents was something that could be attempted. There was no behavior that was preferable to that behavior. That behavior was one that I should not, in any situation or circumstance, do with anyone. It was beyond the realm of what was permissible.
Hitting people, especially authority figures, was not allowed because in real life, it is not allowed. This is not to say I wasn't taught, as I got older, how to respectfully disagree with authority or how to assert myself. But I learned how to do so within the bounds of acceptable behavior.