If your hard drive fails, your data is lost, and your game progress and characters are lost as well.
And what happens if the game shuts down?
When the game developer released a 2nd edition of the game, you have to start from 0 again. But if you could make it your own NFT, it's yours.
Doesn't that mean that the developer has to use the same kind of character properties? Also, what's the need for a blockchain if that's all you want? Export your character in a .chr format and import it wherever you want.
Now imagine if you could import/export these characters and use them in different games.
But, a character from, say GTA V, should only be playable in GTA V or even into few other versions of the game. Don't you already trust Rockstar Games for keeping their servers running? Isn't there already a central point of failure?