Feminism’s push to get women out of the home and into male jobs does many things at once: It doubles the labor force, creates more competition for jobs, drives down wages, creates a new demand for jobs to replace the jobs women used to do at home, and removes the competition that female-led cottage industries used to pose big business. All of these outcomes align with corporate interests — besides creating more income streams that the government can tax.

University of Pennsylvania researchers presented compelling data indicating that women’s sense of happiness has been declining in industrialized countries for the last 35 years, a conclusion shared by six other major studies across 35 developed countries totaling more than 1.3 million participants.

For comparison, the 1970s saw women as a group reporting a higher sense of happiness than men. But in the last three decades, that sense of well-being has steadily declined, both in absolute terms and relative to male happiness.

This drop in happiness is still present when other factors are controlled for: with children or without, married or unmarried, single or divorced, young or old, across all ethnicities, job types, and income levels. Women are unhappy and they’re getting unhappier.