pow isn't bad in general but a monetary based incentive model doesn't work. it may on the paper, in theory
but you have to deal with humans here and they have totally different demands (mostly accumulation driven).
i mean, is there really any doubt that this model already lead into a very unhealthy centralization?

perhaps for those denying reality, granted, but assuming this centralization is the case you have to accept
that pow is much, much more vulnerable by bad actors than other models. i am talking not about the weird
double spending scenarious contructed here, which are nonsense simple due to a horrible risk/reward ratio.
i you just think a minute about the details necessary to initiate an attack (real world) it comes clear nobody
would do this just for some doublespends but they would, if the goal is to create controlled mayhem.

taking this into account you can ask yourself now what gives you more confidence for a multi-billion
ecosystem. pos, where an attacker has to reveal his intention by positioning building* to get the majority
thru a very expensive asymptotically nearing or a handfull powerlines driven by an even smaller number
of miners?

well, for me this is a no-brainer. sad how things are evolved but i would bet the probability an attacker
could get the control on pos by buying old gen keys is magnitude smaller than satoshi is heavily pissed off
how things are going and therefore switching his 1mio btc stash into ethereum.

*silent positioning building is pretty hard, even in traditional markets, where most parts of the books
are closed but in crypto this much harder since most data is visible and many tracking tools already
looking exactly for those kind of pattern.