This is exactly my issue with any kind of crypto 'currency'. Its value is the cost to 'mine' it as use of computing equipment and electricity - plus speculation.

The distributed register (the blockchain) is in itself an interesting way to track ownership of physical assets or shares of those assets, so long as all parties agree. I can see it in use someday at the NYSE as, essentially, digital stock certificates. But owning a 'token' somehow associated with a physical thing (NFTs) is absurd. Who agrees?