When I hear people that complain about bitcoin's "energy usage" and claim to care about humanity its hard to take them seriously at all. The main reason is the US dollar dominance is largely due to the war machine. I really think bitcoin fixes this and for this reason alone it is worth the cost of energy usage even if you think energy usage is bad. I don't by the way.
Here is an amazing short video comparing mining BTC with armies wars... (source from Simply Bitcoin channel) https://www.bitchute.com/video/UOFzMF3EWcLs/