The PoW stuff, yeah, there is a reason it exists as you know but it is undeniably insane too. PoS is going to be interesting to see how it goes with Eth.
As a third dimension, I am very optimistic that we're on the order of 1 decade away from a huge change in energy, where solar is dirt cheap. If we see an S curve style shift to that mode of energy production, I think the PoW conversation changes a lot.