This entire section, your explanation of a natural environment:

> In a natural environment, there is no 'evolutionary diversity' in the way you try to paint it. Main drivers in human sexual evolution are hidden ovulation and a monthly cycle, we are one of the few rare mammal species that have it. Its purpose is to make monopolization by a male costly, because he doesn't know when the female is fertile. This generally results in serial monogamy - a male and female are together until their child reaches age of around four. The female, being fertile from cca 14 to 30, will generally enter cca 4 pairings of this kind. With high child mortality in hunter-gatherers, that generally results in slightly above replacement rate.