Men and women really don't understand the nature of either their own or the other's sex. Those natures have stayed relatively constant thruout our anthropology inspite of extended lifespans, history and changes in life-style and the quality of life. There is no wonder, consequently, that we mate and 'love forever!' -but divorce and separate increasingly as our intellectual communion (homo- or heterosexual) fails with time ...(-from Feminism, Male Sex, Evolution and Jail)
The evolution of our 'prohominid cerebration' on the other hand, took such extended family congregation into coalescings of 'primitive society' thru which, eventually, such 'primitive, vertebrate breeding' was itself superceded under increasingly
deliberative but still pecking-order-based 'rationale' under natural-selection. This evolution (eventually 'knowledge' -science and technology), is synonymous that of 'facilitating organism viability' and extending life-span/physiology therein, in
a way which increasingly subordinated that primitive reproductive cycle to societal and civilizational 'advances' -both men and women eventually 'accommodating' child-bearing to marriage and the years between very late teens thru early thirties.
Circumstances and physiology changing further with age, women (mothers, especially) frequently found themselves with interest in sex waning into menopause and terminating thereafter -men, disparately, of 'primitive' drive essentially continuing into
likewise increasing old age. -There is no mystery in the eventually formal institutionalization of polygamy (Mormonism in particular), the whole of 'the war between the sexes' actually beginning with the primitive agrarianism of the Late Stone Age -but
really taking off after the industrial revolution.
What has evolved is a period of singularly human-kind life-time between 'primitive-man parenting complete' (24 to 28 years of age) and present-day 'old age' that never existed for primitive man, a time of 'war between the sexes' that no one seems
to care 'how it got that way' -pecking order, 'survival-of-the-fittest' and ignorant complaint. Consequences of our 'superceding' this primitive progenitive basis, it should be observed -democracy, free enterprise and economic policy for example, and
ethics, religion, human rights and other such nonsense thru which we justify our 'life-style and the quality of life', have nothing to do with the fact that we have yet understand and assimilate this quite natural divergence that so critically
underlies that 'war between the sexes' -'the human phenomenon and all things human'.