Females in prehistoric societies

Ages 0-6, infants and younger juveniles:
Girls this age are a long way from reproductive age and it’s generally not worthwhile for a man to invest much effort in acquiring them as wives. Mortality is high and there’s a good chance a girl this age won’t even survive to reproductive age. If a girl this age is offered to man as a gift he might as well take her but it’s not worth investing effort in chasing after girls this age. It’s generally best for a man to ignore girls this young. There’s little competition between the males for girls this age.

Ages 7-11, older juveniles:
These girls are closer to reproductive age and it’s now worthwhile for a man to invest effort in trying to acquire them as wives. They’re past the younger juvenile stage and the chance of them surviving to reproductive age is over 90%. Competition for girls this age is rising as they approach reproductive age. Men often fall in love with girls this age and get married to them but won’t usually have intercourse with them until adolescence. Similarly, girls this age may be abducted by raiders from other tribes to be kept as wives but they won’t usually have intercourse with (or rape) them this young.

Ages 12-16, adolescents:
Now the heat’s really on. The girls are on the verge of reproductive age and approaching the deadline. They are ready to mate with but haven’t yet got pregnant. Competition for them is at its fiercest since the man who wins a girl at this age can have all her future fertile years to himself and won’t have to wait long before she starts reproducing. Fights often break out over them and sometimes result in death. At this age they’re at their greatest danger of being kidnapped by raiders. Their pristine, perky adolescent boobs and bodies make them stand out from the juvenile girls and the adult women whose bodies show signs of prior pregnancies such as drooping boobs and stretchmarks. Their faces and bodies have an adolescent sparkle that catches men’s attention and incites men to chase after and compete for them. Their vaginas are not yet damaged by childbirth. Girls this age without husbands or male protectors are routinely pushed around, sexually harassed, and raped by the other men in the tribe. I’m not just saying this to be shocking, this is how savage ancestral humans probably were.

Age 17 onward, adults:
Competition for girls now goes into decline. Girls this age have now started reproducing and are biologically adults. From this age onward the number fertile years women have remaining goes into decline. This decline is reflected in declining physical appearance. Their boobs get saggier with every pregnancy, their stomachs accumulate stretchmarks, their waists go flabby, their faces grow duller every year, and they develop cellulite and get fatter. Remember these people are near-naked and everything is on display. Women in modern societies can cover themselves up and wear bras that give the illusion their boobs are still pert and artificially recreate their adolescent attractiveness.