A single bitcoin transaction has a carbon footprint of 359.04 kgCO2 – equivalent to the carbon footprint of 795,752 VISA transactions or 59,840 hours of watching YouTube.
https://www.financialexpress.com/industry/bitcoin-shocker-cr...
The energy spent on Bitcoin includes mining, auditing, transporting, securing, etc. It is interesting, at least, to consider that mining Bitcoin is all inclusive. All the energy spent supports the global network.
I think it's worth looking into if Bitcoin actually has some benefits. I don't think this is a clear cut issue and outright statements like, "it really has to stop", IMO, isn't going to help at this time.
What you are saying is that people are doing things with energy that you don't understand, and can't make sense of why they do it. The people that do, do understand, and think it is very sensible to do this.
There are many things in this life I do not like, however, I strongly believe that I have no place to condemn the actions of others provided they do no harm.
The argument then becomes if non-green generation of bitcoin is harmful -- I would say, yes it possibly is! That is why projects like SolarBatteryBitcoin are so important, to provide an incentive green-energy production behavior; which appears to be the main reason you don't like this technology.
I implore you to open your eyes to what is going on here. You can sit on the sidelines throwing rocks, or you can take part in the biggest change in your lifetime.