The Problem Is Capitalism
monbiot.com
monbiot.com
Mitigating Capitalism's greater evils seems like the only feasible option. The two things that stand out are stopping the incredible concentration of wealth in single entities (eg Saudi Arabia), and preventing perverse economic incentives (see American Health system).
Just like "America" isn't.
But yes... we do need to deal with the 1% issue that is overbalancing the system
Economic growth is overall strongly correlated with human prosperity, higher life-expectancies, and higher standard of living. If we ever do run low on a natural resource, capitalism softens the blow by gradually increasing prices, thereby increasing incentives for finding an alternative.
Capitalism will be what pushes us to the infinite resources of space.... then I imagine it'll run into new problems that no one has yet realized they need to solve problems for. I'd rather have a reliable, tried and tested capitalism (devil we know) to deal with the the new issues Space will present than some fledgling new system.
Also, in regards to "what we call life", I would note we are already familiar with organisms that can survive in space (tardigrades), and our rapidly growing knowledge of biology and genetics opens a future in which we may be able to apply biological changes that would allow us to thrive in a wider range of environments.
It's not just perpetual, but exponential. However it has nothing to do with capitalism. How do free markets and private ownership over the means of production demand perpetual growth?
It's our monetary system which demands this growth. Bitcoiners have been harping about this for years, but that message tends to get lost in zealotry.
As long as you have a debt-based monetary system and a central bank that targets 2% inflation per year, you can happily have a communist economy that requires the same exponential growth. And similarly that would not be the fault of communism.
The ongoing struggle to compete for profit.