This single mother boom was created and fostered by arch-radical, man-hating Nazi feminists many years ago in an effort to destroy the nuclear family.
P.S One of my sisters resembles the man-hating feminist. As a single mother, she had a child who managed to turn out pretty good. My father died recently, and my sister, who hated my father, refused to attend the funeral. Her son and only child lambasted her for not going.
They've had plenty of help from the right and left. A better tag team cage match is hard to find. There are lots of jobs depending on that 50% divorce rate.