The best "degrowth" argument I have seen is from a physicist [0]. His argument is based on hard limits to the amount of waste heat produced by energy consuming

The best "degrowth" argument I have seen is from a physicist [0]. His argument is based on hard limits to the amount of waste heat produced by energy consuming (i.e. all) activities of humanity. He shows that if the current rate of economic growth continued for the next 400 years then humanity would be consuming more energy than in all the sunlight reaching earth and would produce enough waste heat that the surface of the earth would boil. So continuous growth is physically impossible, even alloting for nuclear fusion and miracle technologies. That's just considering energy/electricity, which is optimistic because civilization has on the order of at least hundreds or thousands of necessary inputs that aren't fungible. Water, air, food, and other raw materials for our bodies and technologies will become scarce more quickly. A huge amount of growth has been due to "free" value provided by ecosystems, fossil fuels, minerals, the sun, etc. If we get to the point where all the free stuff from nature is not enough and we have to fission and fusion our raw materials we will be living in a society of such profound scarcity that we could probably only subsist as rows of brains in vats. So the degrowth argument is not that humans should voluntarily suffer to preserve a sentimental gaia aspect, but that suffering is inevitable due to unsustainability and that it would be better to spread it out over a longer time than suffer a major crash. [0] https://dothemath.ucsd.edu/2012/04/economist-meets-physicist/ https://dothemath.ucsd.edu/2012/04/economist-meets-physicist...