The cross-national correlation between gender equality and lower fertility is exceptionally strong (r ≈ 0.81). After the 1960s, a unique mating regime spread across parts of the world—with female emancipation, individual mate choice, and effective birth control—followed by a continuing rise in singlehood and declining fertility. Almost all women still want to reproduce, but many struggle to find a good-enough partner. This article argues from an evolutionary perspective that many men’s utility to “free women” has been so diminished that solving the fertility crisis by increasing pair-bonding rates seems unfeasible. A viable means for aiding the survival of low-fertility nations could be to provide women with the economic and social resources necessary for them to conclude that having children alone makes for a better life than remaining childless. Such policies would likely exacerbate male marginalization, but new technologies are on the horizon that could offer men reproductive equality.
