Bubbles pop. Pyramid schemes reach their conclusion. This is a natural cycle. Also starting to seem some bans on wasting electricity for useless number crunching.
But I guess the answer still stands, from investor(especially regular investor) point of view, where can you park your money that is likely to generate return on part/slightly higher than inflation, while not investing into too high risk assets? There are not many options available, ie t-bonds etc are not an option for many
Not sure if your suggestion of NFT is a sarcasm or you actually believe it. I haven't seen any studies on risk/potential return on NFT, but my bet would be that average person with some money that needs investing would lose, rather than make money.