The first implementation of NFT's is for artwork but that's just one implementation. When you step back and look at the actual technology, it's introduced a paradigm shift for how we think of objects on the internet. Before NFT's, everything on the internet was fungible, if it existed on the internet, you could copy it. Sure there are things like DRM, but that is just an abstraction on top of a fungible thing that tries to make that thing non-fungible.
I don't know where the technology will take us, or what it will look like in 20, 30 or 40 years, but when you think about the idea that everything up until now on the internet has been copyable and we are just starting to figure out how to actually give a digital thing ownership, that will change how we look at just about everything on the internet, from DRM to authentication and many other aspects. I think when I'm your age (mid 20's now), NFT's will be everywhere and "NFT Artwork" will be looked back on as the very first implementation of the technology, and likely with many jokes about how bad it all was.