I am so conflicted about the environmental impact of Proof-Of-Work. In many ways it feels like an arbitrary energy spend - but I think criticizing cryptocurrency for it seems a little disingenuous when we don't apply the same logic to other areas. What's the environmental impact of better refresh rates on monitors? What's the environmental impact of large scale cctv systems? What's the environmental impact of western…
That's why Bitcoin/PoW is in a different category to me: It's a Red Queen's Race where all the miners are incentivized to keep wasting more and more energy (for no greater benefit) or else risk that somebody else can execute a 51% attack.
Imagine if your email host needed to keep burning more and more energy, not to send any more emails, but because if they ever backed off, somebody else could steal your email address from you.