You seem to be misinterpreting my point. You are justifying physical aggression with "there isn't enough time."
Discussion
Discipline is not aggression.
Hitting (no matter what you want to call it) is not discipline. Discipline is internal self regulation. You aren't teaching that, you are demonstrating your lack of it.
Being disciplined, and dispensing it, are two different things. I am disciplined but I'm human, so I'm not perfect. Teaching your children that their are consequences to their inappropriate behavior is in fact, instilling discipline in my children. What's so hard about understanding touching a hot stove will burn your hand? Listen to your parents instruction or you get spanked. Same thing bud. I don't spank them for being outgoing, doing things for themselves, questioning things, etc. I spank them when they don't listen to me or their mother and when they're willfully defiant. They're free to question me when they move out on their own.