Buying art with an NFT is just a way to give artists and/or art auctioneers money for their art. That's it.
Oh and it can be used for other things like event ticketing, software license keys, etc.
An NFT is just a way to record (in an immutable distributed ledger) that a specific, uniquely-identifiable token was transferred from A to B.
People have always paid stupid amounts of money for art, and in the last 100 years increasingly art that doesn't require years of training/practice and advanced craftsmanship. Why is this any different?
It sounds like you just don't want to be involved in the art market, which nobody in their right mind wants to be involved in anyway.
Complaining about NFTs is like complaining about "blockchain" or "the internet" or whatever.