Air conditioning literally saves lives, especially medically vulnerable people, the hell are you on about?

As others have pointed out, ~2% of the entire US's energy output is absolutely insane. According to the eia.gov, the US produced around 100 quadrillion BTUs worth of energy in 2022 (I don't fully know why they chose BTUs to measure the total energy output, they explain on the website, but that's besides the point). 2% of that is 2 quadrillion BTUs. According to psu.edu (I googled these sites on my laptop so don't have exact urls on my phone at the moment), the entirety of US households in 2017 used 4.58 quadrillion BTUs.

Think about that. Bitcoin/PoW coin miners are using enough electricity to power around half of all homes in the US. According to statista.com, in 2022 there were 144 million homes. These miners consume 72 million homes worth of energy. And for what? To solve math problems that benefits no one but Bitcoin/PoW coin investors?

We're literally seeing our weather patterns become more and more extreme every year due to climate change, which is also killing our oceans which is causing a severely negative chain reaction in the rest of our ecosystems... But, you know, fuck all that, I need to use an extremely inefficient method of generating currency that no one but enthusiasts/speculators/investors asked for. I'm not inherently against cryptocurrency; however, fuck Bitcoin and other extremely wasteful PoW coins.

And yes, printing dollar bills/other fiat currencies creates pollution, too. I agree that process should be modernized as well. And in some ways, it already has been undergoing modernization as more and more people use electronic payments vs cash, thus decreasing the need to print more bills.