[mynameishere]

if the survival of human civilisation isn't enough, what can you propose

Tell them the magic elves demand doing your bidding? Because both things are on the same level of rationality? Civilization, as such, is in no danger.

...

To OP: The problem will solve itself if the population of the world goes down enough, whether naturally or through some actual catastrophe. Indeed most of the world's birth rate is low enough that we are well on the way of a solution. Look up which parts of the world still have massive population growth and then see how many liberals you can get on board with trying to reduce that. Good luck.

[yread]

i hope population of the world goes down a lot in your region in particular