I know Blockchain is the future, but it's not meant to be used for everything. There are millions of NFTs that could bloat popular Blockchain networks if they become a big hit. BTC experienced high fees because of this, as well as, ETH itself. Moving data into a decentralized cloud storage solution may not be enough to improve NFTs as a whole. This is just starting to blossom, so I'd give more time to see what happens. Just my thoughts
Concept of owning nfts is debatable becayse it all comes to definition of digital "owning". You don't own the files in a classical sense, and that wouldn't even make sense. You however own the rights to trade it for example. And if we are talking about current usecases, there are now over 10 million reddit nft avatar holders.
There are non-nft avatars in reddit too that you can use to build your avatar. But if you are using NFTs to build your avatar, you can get some rare ones that are very much wanted.
If you are wearing nft avatar you can choose what parts you are wearing from it, and you can combine different nfts. NFT avatars shows up differently and you can't fake wearing them. Those are freely traded in opensea and i think it's one of the first actually cool adopted usecases for nfts. You "own" those NFTs as long reddit is alive and i am thinking it will definitely last for several generations.
And NFTs are just starting, now there is ERC-6551 coming and that's unlocking ton of new possibilities. But i'll wait for it to be tested before i'll get too ecxited