NFTs are so new that the actual potential isn't even fully realised yet. I think they're here to stay, and they're going to be an essential part of life moving forward, depending on what they're used for. One-off art pieces from random celebrities are only just one piece of the puzzle - and a really basic application of the concept.
But once NFTs are used to secure original rights to music, movies, branded items.... that's where things get REALLY interesting.
Then start looking at the projects applying NFTs to guarantee the authenticity of sports memorabilia, or other original collectibles. Imagine Baseball cards / Panini Stickers / Pokemon cards / rare Nike shoes, easily traded between a huge audience because there's less risk of getting a fake.
And then you have the concept of NFTs applied to skins / unique add-ons in online gaming. WOW. Imagine the money in that.
And THEN you have NFTs applied to actual licensed 3D virtual collectible universes like DC Comics, Back to the Future etc... that you can trade, experience and display in Augmented Reality (AR). Mindblowing!
The potential of NFTs is limitless at this point. Oh, and all these usecases I mentioned actually already exist / are being worked on. Not hypotheses. DYOR but I'm super bullish