Marriage Toll

From ScienceCareers.org:

"Men conduct scientific research (or do anything else) in order to attract women and get married (albeit unconsciously)," he says. "What’s the point of doing science (or anything else) if one is already married? Marriage (or, more accurately reproductive success, which men can usually attain only through marriage) is the goal; science or anything else men do is but a means. From my perspective, scientists are no different than anybody else; evolutionary psychology applies to all humans equally," he adds.

Source: Althouse