I think NFT's applied to art make only nominal sense. I myself had to come to the realization that NFT's are really just flexing for the rich, because as anyone realizes, right-click save-as is all you need to have the art too, just not the "key" or "ownership proof" to that art.

However when it comes to gameing, its a whole different story. Think of it more like a key to unlock something unique in the digital world.

Want to own some unique special edition sword with rare attributes in the Zelda-verse? Buy the NFT block chain address to it that says you and only you can have it. Want to own the penthouse apartment in the zucker-verse? Buy the NFT key that says only you have ownership rights. Want to be a unique character with unique pets in World-of-crypto-craft? Buy the NFT's to unlock these. Sell them if you get bored for more money, and the game developer gets a cut!

The gaming application scenarios are enormous. That's why crypto gaming will likely be huge and I myself have invested in it's foundations for the long term (Enjin, Seedify-fund, D-race, etc). It's one of the few applications that makes sense outside of rich snobs flexing.