Cryptocurrencies need to get their shit together. It consumes 0.5% of the world's energy today, and consumes 20% more month over month. May 2018: 1/200. Dec 2020: 200/200. Cryptocurrencies need to be banned today. Not tomorrow. Not in a year. Today.https://grist.org/article/bitcoins-energy-use-got-studied-and-you-libertarian-nerds-look-even-worse-than-usual/amp …
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Not sure about the details, but here's some facts that might resemble an answer: - hashes become increasingly more expensive to brute force - spending more time breaking hashes increases your chance of reward - energy consumption scales 1:1 with time spent breaking hashes
I think it's important to trade benefits vs costs with any technology. There's plenty of downsides to society caused by Bitcoin that can be observed today. I'm unsure about the benefits to society it provides. Lots of promises though. But anything tangible? Haven't seen it.