Well, it's the only way to run a trustless currency that has been tested at scale. I dislike energy waste as much as anyone else, but that's the current state o

Well, it's the only way to run a trustless currency that has been tested at scale. I dislike energy waste as much as anyone else, but that's the current state of things. We will eventually move past this phase with PoS or something, but all the approaches are still in their infancy.