Proof of stake will give pervert the incentives of the network. It'll allow large stake holders to control the network, we don't want that. Proof of Work will ensure that nobody has control over the network and everyone is incentivized to participate honestly.
Unfortunately it requires one Argentina of power to do the work of a single raspberry pi, and I suggest environmentalists and the government won't look the other way indefinitely. Carbon pricing for instance makes the whole thing topple over.
bitcoin works just fine with any power source, not just conveniently located grid energy. you can mine bitcoin in a remote place and transmit the network data much more easily than you can transport/transmit energy. you could raise the price of fossil fuels by a factor of 1 million and crypto mining would be the least affected of any industry. so go right ahead and try it.
Is proof of waste not a suitable name? It's proof a huge quantity of resources were wasted on deriving some random garbage you can append to a piece of data to obtain a certain number of leading zeroes on a SHA lol. 600kWh per transaction. Horrifying.
I'm sorry, but how is you being "horrified" an objective measure of goodness? You described the process and just said it's horrifying, what do you expect me to respond with?
