Dr, I think this quote addresses the last sentence of your note. If Bitcoin helps
displace hedonistic consumerism with truly productive investment its energy consumption will be more than justified.

“Deflationary money… will give everyone a reason to save rather than overconsume, giving more people access to whatever they want over time because of the falling prices. If you postpone your spending, your bitcoin will buy you more in the future. In other words, fewer transactions. Quality before quantity. The necessity for transactions per second will diminish.”

https://bitcoinmagazine.com/culture/real-scaling-solution-for-bitcoin