This is America. We don't beat our wives here. We're more civilized than that. Except for the south. They still do it from time to time.
Hey this is multicultural London. Ever heard of the term reasonable accomodation? Essentially as long as I can justify this as part of my culture, I can get away with it. (I'm Greek btw).
How about never? because she loves you (at least should) and you love her (at least should)
Don't you see? It's because I love her. It's for her own good. Anyone who thinks otherwise clearly doesn't know how to handle a woman. Plus, if she breaks any of the rules then she doesn't love me, and that cannot go unpunished.