Earlier quoted context omitted.
The Catholic Church persists because of followers of the religion, not Priests. That those followers have healthy fertility rates is the main reason it, and quite a number of other religions, are growing to rapidly growing - in spite of the perception many in the West would have about the global increase of secularism. In fact we're likely to become a far more religious species in the future thanks to secular individ…
The US (and even the UK) are a lot better at integrating immigrants than most of Europe. > Migration was even one of the major causes of the fall of the Roman Empire! You might like https://acoup.blog/ for a few more nuanced takes. > The Catholic Church persists because of followers of the religion, not Priests. That those followers have healthy fertility rates is the main reason it, and quite a number of other relig…
Fertility, when shared amongst a population, has an easy to model effect on population. It's a population scalar of fertility_rate/2 per ~20 years. So a fertility rate of 1 would mean your population is dropping by 50% every 20 years. That is compounding/exponential and never ends until you go extinct or start having more babies. Compensating for this by immigration is basically impossible, and at that scale you will quickly become the country of origin of immigrants in any case. Of course we're not even especially close to a fertility rate of 1 yet, but that is the trendline and really the same argument even applies to rather higher levels of fertility.
[1] - https://www.pewresearch.org/short-reads/2024/09/27/key-findi...