I used to give my boys, now the ex's boys, one good swat on the butt for doing something that caused someone else risk of serious harm (like trying to kill each other with a stick). One swift goo pop was all it took to get the message across to them. I never raised a hand to them if I was mad. I would leave the house and come back after I had time to cool down. They got a good spanking coming when I got home. That only happen once. After I told them "I left because if I didn't I would have beaten you and not be able to stop because I was so mad." Any time after that if I left the house mad, they would run to their mother and tell her how sorry they are. She would send them to their rooms and tell them to explain to me what they did, and why it was wrong. I even used to send them to bed without dinner when they got big enough that a spanking didn't work. The ex would always give them dinner anyway. The Ex always told me I was to strict with them. Now they tell me they love me and we have a great time hanging out and doing things together, but they show the Ex no respect. They tell her right to her face that she can't make them do their chores or school work. They don't take her seriously if she threatens to discipline them because they know she won't follow through with any punishment.
It proved to me one very true statement. "Spare the rod, spoil the child." If you don't discipline your children, you will raise brats that have no respect for anyone, not even themselves. Disagree if you want, but it's true.
Kids who get spanked might grow up to dislike their parents. Kids who don't, grow up to be disrespectful punks who think they can do anything, and don't give a rat's ass about the life of another person.
Kids in a household where doth parents work is not much better. They will do everything that they know is bad because there is nobody there to tell them no. I have seen this happen with so many parents it no longer amuses me. Where do you think most young gang members come from? Both parent, or a single parent, is at work when the kids get out of school. What do the kids do during that time? Most of them do whatever the hell they want, and don't care about the results.
If you send your kids to daycare, you better know the values of the babysitter. They will be raising your kids with their values.