Actually more than one, because I also read one about scientists deciphering messages from aliens who used the word for "baby eater" to mean "good"
The other one appears to be https://www.goodreads.com/book/show/15744759-three-worlds-co... (summary and review at https://www.reddit.com/r/CharacterRant/comments/up854p/three... )
birth control and its consequences have been a disaster for the human race
in addition to the obvious birth rate effects, i think there are a lot of other sociological effects from everyone being on hormonal birth control that people don’t want to admit
Women are choosing not to have children, and you need to ask them why and take the answers seriously.
women have sex drives too, if they arent on birth control they are more likely to engage in behavior that can get them pregnant
Well yes, trivially: it's kinda difficult to engage in behaviour that can get someone on birth control pregnant. The first behaviour pretty much has to be "stop using the birth control".
When I was a teenage boy and learning about periods and the pill for the first time, I thought it obvious that women would choose the pill to stop having periods: they sound awful.
Took a decade or so before I learned that some women actually have much worse experiences on the pill than off. This is presumably why mooncups are really popular. And presumably those also have issues, otherwise I'd have stopped seeing tampons for sale.
I can't tell by your username if you're a woman with the lived experience of what you're stating is the cause of lower birth rates, or one of the many guys like me who just assumed the pill would solve a lot of the problems women talk about?
But you know what did occur in the 1960s-1970s? The invention and popularization of the birth control pill. Here is the US birth rate [1]. Rising from 1950-1960 then a sudden and precipitous drop in the 1960s until stabilization in the 1970-now range. This coincides with the global drop in fertility rate. How about Germany [2]? Growth from 1950 to late 1960s then a sudden drop until stabilization in the mid 1970s. France [3]? Flat and high until mid-1960s then a sudden drop until stabilization in 1980. UK [4]? Growth from 1950 to mid 1960s then a sudden drop until stabilization mid 1970s. Australia [5]? Growth until 1960 then drop until stabilization in 1980.
Every single developed country in the world is flat to growing and then sees a sudden and rapid decline in birth rate just a few years after mass availability of the birth control pill until stabilization around the time that the pre-birth control cohort ages past reproductive years. The birth control pill is so new that the reproductive cohort that lived prior to its invention is still alive.
My hypothesis is that fertility is just a function of access to cheap, effective contraceptives. The fertility rates we see today are the natural rates when pregnancy is a choice.
[1] https://www.macrotrends.net/global-metrics/countries/usa/uni...
[2] https://www.macrotrends.net/global-metrics/countries/deu/ger...
[3] https://www.macrotrends.net/global-metrics/countries/fra/fra...
[4] https://www.macrotrends.net/global-metrics/countries/gbr/uni...
[5] https://www.macrotrends.net/global-metrics/countries/aus/aus...