NFTs are basicly a digital version of the "Certificate OF Authenticity" you get when you spend decent money on an artwork, and, pass on if you sell it.
These certificates have no real value and are easy to fake but you always get one from the dealer and any buyer expects to see one. Its the the equivalent of kicking the tyres when you buy a used car. It's pointless, but everybody does it and is part of the ritual.
So now we have a digital equivalent of the shiny parchment sheet which is just as worthless and just as useless, and much much easier to fake. Just how would you verify that an NFT is genuine? How would you verify that its not the tenth copy of the NFT that is being sold to you. How is your copy of the digital artifact better than the millions of other copies without an NFT?
The main use case for blockchain is to part the gullible from there money.