> I suspect in any case the women are interested in more than just sex most of the time, unlike many men.
IMHO this is overstated considering the rise of the childfree "movement".
I don't mean that women want children, but that they are seeking longer term romance/companionship/etc over just sex, more so than men are, in many situations.
Is it that you no longer demand sex because you're over 40, or women are demanding more? I suspect in any case the women are interested in more than just sex most of the time, unlike many men.