My since is that it is more cultural than biological. I live in the Middle East and I know the advice here would be to go bring my wife home and if I have to get physical to teach her how to behave properly that that is my duty as a husband. My Asian housemaid is confused as to why I just don't go get her, because women aren't allowed to act this way according to her. Now these examples have a gender bias obviously. And MLC may exist here and be more acceptable in men, but honestly here men's adolescent behaviors toward women are more accepted at any age. Also many cultures are collectivist cultures and there is more pressure to conform to the group than individuate or self-actualize. They would not understand these words.
In the west, America especially, we are about freedom and the "pursuit of happiness." My wife is off pursuing happiness.
Affluence I think had bit to do with it too. The more we get the more we want.
All that said my wife's MLC, according to my father-in-law, looks identical it her own mother's MLC 20 years ago. (Nature or nurture, who knows).
I'm of Irish descent and haven't hit MLC yet, but maybe my wife beat me to it.