[FabHK]

It is well established, from what I gather, that in many species, most (=more than half of the) ancestors (of the extant population) are female. For most of human history, most women had children, while most men did not have children. So, that is something that happened in real life.

[awaythrowwwww]

Are you implying that our ancestors have had only as many sexual relations as they had children?

[FabHK]

No. Are you implying that there is a systematic difference between men and women in the ratio of sexual relations and children?

[awaythrowwwww]

I don't understand what you said. I also don't understand what children have to do with this and how they relate in any way to the amount of sex one may have beyond "once or twice".

If anything, our evolutionary history indicates a promiscuous lifestyle with everyone having sex with everyone else and post-spermatic competition.