energy problem.
CPU only algorithms are one of the best places to go
Have you compared the energy efficiency of CPUs against ASICs?
And have you compared the CO2 footprint of residential energy mix to the CO2 footprint of an ASIC farm's energy source?
12% of the electricity in the US is renewable; while Bitcoin ASICs have around 70% renewable.
https://www.eia.gov/energyexplained/us-energy-facts/In December 2019, one report suggested that 73% of Bitcoins energy consumption was carbon neutral, largely due to the abundance of hydro power in major mining hubs such as Southwest China and Scandinavia. On the other hand, the CCAF estimated in September 2020 that the figure is closer to 39%. But even if the lower number is correct, thats still almost twice as much as the U.S. grid, suggesting that looking at energy consumption alone is hardly a reliable method for determining Bitcoins carbon emissions.
Also do consider that CPU mining farms would fuck up the consumer PC market even more than the GPU mining of Ethereum did in the past. You could run a PC without GPU, but not without CPU.