>>54407090It's not just that the facilities cost billions to build, it's that there's a limit to how fast you can desalinate water and it can only feasibly support small populations unless you're America level rich and can just coat the entire coast with them. Desalination as a technology isn't really far enough to support an entire country's water source. Currently even countries like Saudi Arabia that heavily invest in desalination also import a lot of bottled water because it just isn't enough.
I suppose if people made a lot of policy/behavioral changes like communal bathing and recycling bath water it could be sustainable for a while in a doomsday scenario, but on its face you can't necessarily throw money at every climate problem if the geography just doesn't want to support human life.
This is also why colonizing Mars is totally out of the question for at least a century outside of tiny bubble colonies exclusively for researches. We can't even colonize Antarctica.It is an interesting discussion though so thank you for allowing me to sperg.