Comment by frongpik

Bitcoin, imho, is a clever way to redirect excess energy production into a trustless payments system. The fact that individuals have used personal gpus is an abveration. It will be governments running btc network on excess energy from nuclear plants, they will sign treaties to use only so much energy on btc to prevent the race to the bottom (similar to icbm treaties) and they will use btc for massive gov-to-gov transactions. Individuals in most countries will be barred from touching btc.