Another obvious example in which it should be perfectly permissible, and, in fact, legally encouraged, to beat one's wife:
I was watching a murder documentary a while back. A man's wife takes a younger lover. She even moves him into their house and permanently kicks the husband out of their bedroom, consigning him...either to the couch or to another bedroom. I forget which. She then permits the young man's friends to hang over at their house, drink alcohol, etc.
They ultimately ended up murdering the husband, if I recall correctly.
In my view, the State should delegate its right of violence in such cases to the offended party.
The husband should have been legally permitted and encouraged to beat his wife until either:
1. She saw reason
or
2. She died.
It should have been a perfectly legitimate legal defense for the husband to have walked into court, pointed to his wife's dead body and said: "Your honor, I tried to beat some sense into my wife, but the thing just could not be done. No matter how hard I punched her in the face, she just didn't seem to 'get it.'"
Had he done so, and had it been legal for him to do so, I assure you, everyone would be better off now.
[And yes, Rusha, I'll gladly say the same thing in the case of a male offender. The wife's relatives should be able to give the same legal defense in such a case, were the husband to move a lover into their household, etc.]