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Todd's avatar

Regarding pro/anti-natalism: imagine a young couple that you care for and admire is currently trying to conceive a child. Imagine, next, that it has just been announced that an asteroid capable of ending life on earth has just been detected and is on a collision course with our home planet—impact in 10 years. Would you counsel them to abandon their quest for a family or to persevere?

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Warburton Expat's avatar

I'd suggest that it's not that high birth rates cause misery, or that misery causes high birth rates, but that they have a common cause: illiteracy and poverty.

Worldwide, once female average education hits about eighth grade level, their total fertility rate drops below replacement level (2.1 children per woman). Taking it to tertiary level drops it towards 1. Cultural factors can of course push this up (Amish women are all educated to 8th grade, and have 6+ children) or down (see South Korea with 0.7 children per woman), but that's the dominant effect. Even Iran has dropped under replacement, and Saudi Arabia is close to it, and we can't exactly say it's because of women's liberation in those places - let alone access to birth control.

The link between literacy and happiness is well-established, too.

Similarly, poorer countries tend to have more children than well-off countries, and this relationship holds within countries too (putting the lie to the idea "I can't afford to have kids"). There are a number of reasons for this, including poverty leading to less personal agency (both real and perceived), but I think it can also be due to evolutionary factors. In nature, there are two basic reproductive strategies: have few children and coddle them, vs having zillions and neglecting them, letting the strongest survive. But individuals will adjust their reproductive strategies based on the environment: in times of drought, for example, they have more offspring, in times of plenty, more. The instinct is obviously to have their genetic material survive them. In a time of difficulty, if there's only a 1 in 10 chance of your offspring surviving, you'd better have 10 just in case; in a time of plenty, now it's 9 in 10, you can have just 1. Even birds and lizards do this.

The "have lots so some survive" approach used to be necessary, though nowadays it's not, since thanks to sanitation, vaccination, international food aid and the like, generally speaking we're not going to see the mass deaths we used to historically. But the instinct remains. And so poorer countries or regions within countries have more children.

Thus, poverty increases fertility, and wealth decreases it.

And I think it's well-established that increasing prosperity increases happiness.

So I don't think it's that misery causes lots of children to be born, or lots of children causes misery. I think it's simply that poverty and illiteracy together cause high fertility and also cause misery, and wealth and education cause low fertility and also cause happiness.

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