More men than women have failed to reproduce in each generation.
This item from FuturePundit is not news, it's merely repeatable objective proof of something geeky men have always known:
"There are men around who aren't able to have children, because they are being outcompeted by more successful males."
Any bearer of a Y chromosome who's seen Roxanne can tell you this, though in less charitable terms: "You wanted it all. All the romance and emotion, all wrapped up in a cute little nose and a cute little ass!"
[FuturePundit's] guess is that the legalization and increasing use of divorce has increased the gap between what percentage of women and what percentage of men manage to reproduce in each generation.
Think of the thousand Princes in Sa'udi Arabia, and how they came to be. Then think of the millions of poor schmucks in such countries, who will never get laid in their lives, let alone sire children, because of a paternal religious/political system that treats women as property and allows men to hoard them under polygamy. Liberalized divorce simply means shifting the balance of power over procreation from man toward woman. Clearly, having all of the power rest with the man has not been beneficial there.
A shortage of females will very likely select for genes carried by males who become more successful.Check out the quote from Roxanne above. Shifting the balance completely over to the woman will result in attractive, hunky guys who know how to talk women out of their clothes. Is that how brutal Mother Nature would define success?