"[T]he question is not why do men stay for boys, but rather why mothers of daughters are divorcing more than mothers of sons."

Relax, they've figured out a female-favoring reason why couples with daughters are more likely to divorce than couples with sons. The old explanation that fathers prefer boys must give way to the new explanation: With a daughter at home, being good and supportive as daughters tend to be, a woman has less need for a husband. There, now, aren't you so much happier? The universe makes sense. Women, good. Men, bad.