Not a Christian or follower of any organized religion but IMHO: Humanity (capital-H) is immortal; individual humans are not. Individuals are like the memory cells keeping the accumulated body of knowledge alive, and that body of knowledge is “God” or whatever, simultaneously human and spirit, an entire other world of Idea hosted in a distributed form in our physical reality.
It's like a DRAM refresh where new individuals are born, some bit of the accumulated knowledge gets passed on to them, the old individuals die off, but the knowledge is Eternal. In this sense, human love and reproduction literally makes more room for more Knowledge, and that's why the people who want to rule physical reality as a sort of false-god constantly try to convince us to have fewer humans, The Population Bomb, Maintain Humanity Under 500000000, etc.
This is great, except the knowledge is no more Eternal than the collection of humans. (The knowledge is also leaky—a lot of it has been lost.) If you turn off the DRAM power long enough, you can’t refresh it. So the need to maintain a sustainable environment for the humans is an inescapable conclusion from this model.
Staying under the Earth's carrying capacity isn't some conspiracy, it's basic responsible behavior for surviving as a species. If your income is $700 a week, spending $900 a week isn't sustainable.
It's like a DRAM refresh where new individuals are born, some bit of the accumulated knowledge gets passed on to them, the old individuals die off, but the knowledge is Eternal. In this sense, human love and reproduction literally makes more room for more Knowledge, and that's why the people who want to rule physical reality as a sort of false-god constantly try to convince us to have fewer humans, The Population Bomb, Maintain Humanity Under 500000000, etc.