that's really not very fair or true.
Real evidence shows that given no cultural constraints, most people practice serial monogamy. Serial monogamy would be in the best interest of males who wanted to make sure their own progeny had the best chance of survival, by helping the mother care for them until they were 4 or 5 years old and able to get around and help the tribe. The team effort also results in greater survival rates for all family members.
The idea that babies will be much better off if "the tribe" raises them has been around for a long time. The translation for people who are not familiar with it is that guys who say this want somebody else to pay for the babies they father and don't want to have to contribute monetarily, emotionally, or physically to the rearing of their own or somebody else's kids. They want it to be optional, and they want somebody else to pick up the tab. But it's looked down on generally to speak out in favor of men abandoning their kids and baby mommies.
I'm sure you don't explain that in advance to women you are hoping to have sex with.
My objection to nuclear-family memes is that they restrict me from participating in children's development. We talk about that on this forum a lot, how there are so many fuckin awful parents. The people raising kids collectively would neutralize this shittiness.
But aren't women like, hardwired to be selfish monsters about their children? Are their studies about that?
Like is it literally in their brain "Fuck those hungry kids- mine are gettin the good parts of that kill!"
"Ah, those endless forests, and their horror-haunted gloom! For what eternities have I wandered through them, a timid, hunted creature, starting at the least sound, frightened of my own shadow, keyed-up, ever alert and vigilant, ready on the instant to dash away in mad flight for my life. For I was the prey of all manner of fierce life that dwelt in the forest, and it was in ecstasies of fear that I fled before the hunting monsters."
Jack london, "Before Adam"