Help me understand NFTs, I honestly don't get why anyone would buy it.

I mean I can understand someone for example buying a vintage Key marvel comic book and paying a lot of money for it since it is something that they love and have some inner nostalgic value, and they would probably find others that would pay the same / more for it.

But I just don't get NFTs, I can't wrap my head around paying so much money for stupid cartoonist art which you obviously wanna resell, why would anyone buy it? It doesn't hold any nostalgic value love to anyone, what practical use is there for it? It blows my mind, is this madness?