What’s the Ideal Population of Humanity?

OK, so bizarre ethical/sci-fi/theological question based on yesterday’s post about carrying capacity of a planet: What’s the ideal number of people to have?

From an ethical perspective, the ideal number would seem to be as many as we can reasonably support. Meaning, however many people can live happily on the planet and not over-use our resources. OK, say we hit that ideal number. More people would mean a decreased quality of life for everyone, if not collapse of the planet. So what’s the best solution ethically? Do we try any means necessary to increase that ideal number through technological advancements (taller buildings, more efficient systems, colonizing other planets, etc.) or do we limit population growth to maintain that ideal number?

From a theological perspective, is there some sort of imperative to always have more people? This sort of goes back to God’s command to Noah to multiply and fill the earth, which raises the question, when have we fulfilled this command? Assuming the ethical concerns are met (seems like bad theology to be willing to have more people in poor conditions just so you can evangelize them), does it make sense to go and make disciples by going and making more people? Should the church always be in favor of population growth so that more people can worship God and make him known?

They often say less is more, but is that true for humanity?

I’m just babbling here and throwing out bizarre questions I don’t have the answer to. These are the kinds of things I think about late at night.

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