For me it's just female dual mating strategy in the open: concieve a baby with the hottest available guy (easy), then find a person who will provide the resourc

For me it's just female dual mating strategy in the open: concieve a baby with the hottest available guy (easy), then find a person who will provide the resources to raise the baby (much harder). Of course the best result comes if the two roles can be fulfilled by the some person, but quite often that doesn't happen. DNA tests make the hidden version of this mating strategy harder, but doing it in the open gets more accepted over time. https://en.wikipedia.org/wiki/Strategic_pluralism https://en.wikipedia.org/wiki/Strategic_pluralism