The extreme energy waste is the most salient point to me. Imagine what you could have if you took all the energy spent mining crypto and instead had spent it on building solar panels or N95 masks or high speed rail.
That's not to say that I don't hope non-PoW cryptocurrencies become more popular, we should conserve energy when we can. I haven't looked very much into it, but Stellar seems interesting, and it's not PoW.
A fraction of a percent of what gets used on cryptocurrencies.
I don't know how much people's lives are enriched by cryptocurrency. Other than the people directly involved in mining and speculating on it.
Unjust laws change by disobeying them, and if you clamped down on that 100%, neither homosexuality nor cannabis would be legal now.