It is all because of the notion of the family wage and it is also to coerce women into marriage, therefore giving men that all-important sexual access to women.
People keep avoid the obvious.
According to a new analysis published Tuesday by left-leaning think tank Center for American Progress (CAP), women’s average earnings ten years after they enrolled in college are lower than men’s average earnings six years after enrolling. While it takes some people longer to graduate than others (and there are, of course, some dropouts) the primary takeaway is this: Two years after graduation, men generally earn more than women who have been in the workforce for six years.
And these are Ivy League graduates, supposedly the best of the best, and the wage gap still exists.