It's amazing how many times professionals and even scientists are having to be brought in to state the obvious because people refuse to believe what's right in front of them, I'm probably going to end up starting a flame war by commenting this because I am rabidly anti-domestic abuse against all kinds. The reason people do this is because they have had it taught to them through violence and fear of violence and they repeat the process on the very people they claim to care about. You can see this in the way they desperately try to justify this kind of action towards their children and their spouses, no violence is okay it doesn't matter how you try to paint it and you can see them trying to struggle between what they were taught and what actually happened to them when reality is they were just being made to believe what they believe by being beaten up.
There's also the fact that a lot of this kind of thing is in their religious doctrine, in quite a few religions as a matter of fact, so you have entire generations who are having it beaten into them ( Quite literally in a lot of cases ) that they need to go around beating people up in order to enforce obedience. Also, no I don't consider it a form of teaching respect at all, this is an obey or die mantra that people follow, respect is supposed to be mutual and if you're going around beating the crap out of a child or a wife in order to make someone do what you say even if it's stupid or wrong that's hardly respect is it?
You torture anyone long enough and they will believe anything you want or confess to anything you want because they're scared of being hurt, domestic abuse is just another form of torture, it doesn't matter if you 'lighten' it over a period of time it still has the same kind of damaging psychological affect because it's still physical abuse.
EDIT: Stockholm syndrome is when a hostage forms a bond with the captor after they have been a hostage for a certain amount of time (for those that do not know)