...that the fact women, on the average, take a good deal longer to reach orgasm than men has an evolutionary significance. It's supposedly a way to encourage women to find men who are considerate enough to pay attention to their partners' pleasure as well as their own. If a man is thoughtful enough to hold off until his partner comes, the reasoning goes, it's more likely he'll be thoughtful enough to do other altrustic things, such as support his family properly. Whereas the fire and forget crowd....