—“Why is marriage still viable for the top in this hyperconsumptive society but not for the bottom? Is it because the top have a predisposition to provide higher investment parenting than the bottom?”–Richard Hall
Because in the upper third, there is so much economic advantage, so much status advantage, and so many more means of ameliorating differences, that the relationship can survive as a partnership.
Conversely, hyperconsumption is a means of sedating the inferior status response, that drove demand for religion. Women are more sensitive to status, and have a relentless nesting urge, which is why they are more susceptible to it.
Men, on the other hand, compete for status by DOING and are only concerned with obtaining a position in the hierarchy that they can afford to maintain and not lose.