Earlier quoted context omitted.
> But it's fascinating to think about the second level "why": what made people encode monogamy and heterosexuality into their cultural canons (including their mainstream religion)? I dunno about heterosexuality being encoded[1] into cultural canons, but for monogamy it's actually quite simple: violence. Do you really want half your testosterone-fueled 18-28 year old males unable to attract a mate? There'll be continu…
> Do you really want half your testosterone-fueled 18-28 year old males unable to attract a mate? There'll be continuous fighting to kill of the excess males. This is nonsense. Non-monogamy is relinquishing exclusivity. If a man can have multiple women, but a woman can't have multiple men, it's just a different form of oppression. Monogamy is possessiveness, and possessiveness is what drives violence.
There are reasons to allow only one of the sexes to have multiple sexual partners/spouses.
* In a community with such liberal sexual practices, STDs spread more easily, especially in earlier centuries.
* It makes marriage intrinsically more complicated simply because of the more complex interactions. For example, if Alice is married to Bob, who is married to both Alice and Carol, who is married to both Bob and David, what are Alice and David to each other? Anything? Nothing? Is the entire married community a distinct entity?
* Relatedly, how is inheritance handled if such complex spousal organizations are going to be legally allowed?