Read this article here
I’ve detailed in many prior threads that mate selection is a psycho-biological function that millennia of evolution has hardwired into both sexes. So internalized and socialized is this process into our collective psyches that we rarely recognize we’re subject to these motivators even when we continually repeat the same behaviors manifested by them (such as having the second kid with the Alpha Bad Boy). So saying that we’re not subject to conditions we’re or are only vaguely aware of is a bit naive.
It’s simple deductive logic to follow that for a species to survive it must provide its offspring with the best possible conditions to ensure its survival – either that or to reproduce in such quantity that it ensures survival. The obvious application of this for women is sharing parental investment with the best possible mate her own genetics allow her to attract and who can provide long term security for her and any potential offspring. Thus women are biologically, psychologically and sociologically the filters of their own reproduction, where as men’s reproductive methodology is to scatter as much of his genetic material as humanly possible to the widest available quantity of sexually available females. He of course has his own criteria for mating selection and determining the best genetic pairing for his reproduction (i.e. she’s gotta be hot), but his criteria is certainly less discriminating than that for women (i.e. no one’s ugly after 2am). This is evidenced in our own hormonal biology; men possess between 12 and17 times the amount of testosterone (the primary hormone in sexual arousal) women do and women produce substantially more estrogen (instrumental in sexual caution) and oxytocin (fostering feelings of security and nurturing) than men.
That stated, both of these methodologies conflict in practice. For a woman to best ensure the survival of her young, a man must necessarily abandon his method of reproduction in favor of her own. This then sets a contradictory imperative for him to pair with a woman who will satisfy his methodology. A male must sacrifice his reproductive schedule to satisfy that of the woman he pairs with. Thus, with so much genetic potential at stake on his part of the risk, he want’s not only to ensure that she is the best possible candidate for breeding (and future breeding), but also to know that his progeny will benefit from both parent’s investment.