STEVENSON: Well let me clear, we put that out as a hypothesis, not that there’s evidence that that’s definitely what’s happening. I mean, what we know is the correlation is that over a time period where women have gained more autonomy, more financial power, more market power, more responsibility and power within their families that they have become less happy and men have become slightly happier. And so one possibility is that somehow this sort of revolution in our lives has actually benefited men more than it’s benefited women. And, you know, the comment that Steve Levitt made to us was, of course women have become less happy, they’re living their lives like men, and now they’re just as happy as men, which is not as happy.

http://freakonomics.com/2014/03/20/women-are-not-men-full-transcript-2/

in the past, women had no way to support themselves so they needed to marry early and depend on a man. this led to a short "alpha fucks" period.

thanks to feminism, women can support themselves. the only reason to stop "alpha fucks" is their biological clock.

also, men don't have to shoulder the responsibility of their fathers and grandfathers. this has led to men being much happier than in the past.