I thought you guys might get a kick out of this: https://www.nytimes.com/2018/02/13/upshot/american-fertility-is-falling-short-of-what-women-want.html

Total fertility rates controlling for marital status have not changed very much over the last 15 years. But with marriage coming later, the share of women at peak childbearing ages (20 to 40) who are married has steadily fallen.

So men opting out of marriage is leading to a decrease in population growth. Who wants to bet that men will be blamed?