- There are potentially good wives who are rendered unmarriageable primarily by virtue of consequences of their past decisions.
- Women are dynamic creatures whose perspective and attitudes are usually defined, per de Sade, Day, and various others, by their current lover or husband.
- It has been observed that single women are frequently willing to mistreat, harm, and otherwise put their children at risk in pursuit of relationships with men they find sufficiently desirable.
The BETA male achieves his objective of finding a higher-grade woman than he can normally attract without the huge negative of accepting the burden of supporting her bastards. Not only that, but by virtue of such a demand, he becomes much more attractive to her, as there are few things more ruthlessly ALPHA than requiring a woman to choose between her bastard(s) and the man with whom she is seeking a permanent relationship.
In summary, the woman gets a more attractive man than she bargained for, a significant upgrade on the life support front, and she is relieved of the children that were dragging down her prospects. The man gets a more attractive woman than he expected, unencumbered by the elements that reduced her attractiveness to others.
Is it rough on the bastards? To be sure, but seriously, in a world of abortion and no-fault divorce, it's a little disingenuous to claim that the family system gives even the smallest of damns about children. If the legal regime was genuinely set up to defend the long-term interests of the children, divorce would be illegal except for female adultery, abortion would be punished by the execution of the guilty doctors and nurses and the sterilization of the guilty woman, and custody in the event of divorce would go automatically to the father. So, let's not suddenly start pretending that the interests of the children are relevant here.
Besides, in the situation envisioned, the bastards being raised by single women. Let's face it, the odds are already stacked heavily against them and aren't going to get considerably worse by one more strike being added.
So, it's a win for the Female Imperative, a win for the vital keepers of commitment, and a loss for the party that neither society nor the legal system cares about anyhow.