You know it's an interesting story you wrote, but I would have appreciated it if you had included more variety around the non-monogamy, specifically polyandry and polyamory. As a woman, I personally prefer to have multiple partners an have found other women who feel the same (I only date women). There are actually societies that practice polyandry, and it's a real thing. I feel often there is some mysgonistic qualities in only talking about monogamy and polygamy because it expects the woman to only have one partner while the man can have many-a double standard. While I think women are just as likely to want multiple partners as men.
I did enjoy reading the other topics as well.