It connects to the security narrative. 1 to 2 dimensional thinkers can't see why POW is so damn efficient and such a GOOD use of energy, that will actually transform the entire power industry in 50 years. But there is ZERO chance for a distributed system, much less a decentralized one without it.
Care to explain your reasoning why a system like POS can't work? (genuinely interested)
Seriously:
POS is never so resilient as POW. Imagine if a few large stakers are cut out from the network, even temporarily. Reorgs galore. Or what happens if keys for large stakes are lost/stolen?
POW is Darwinism at proof. Oops, Darwinism at work. The ensuing arms race *ensures* users get the best security that can be bought. As cAPSLOCK stated a few posts above, this could in turn lead to a perfect rationalization of the energy market as a collateral effect.
I'm no expert. This is just what I could come up with quickly. I'm sure someone else will give more detailed answers to your worthy question.