[rothbardrand]

IF it were insanely expensive, nobody would mine. That you don't value the results, doesn't change the economic value of the activity you don't like.

[prostoalex]

A few years back anybody with a decent home PC could mine BTC, nowadays the barrier for entry pretty much requires a truckload of Nvidia products (or customized ASICs) and subsidized electricity.

Fast forward a few years ahead. Do you see more or fewer miners participating in such ecosystem?

PoW as it’s currently implemented encourages centralization.