[dehrmann]

> Collectibles have cultural, artistic, or other value on their own

Interest or novelty, perhaps, but not value. There's a big difference between a baseball used in a game and a baseball card. NFTs show this distinction a bit better because, like baseball cards, they're only loosely associated with the person or thing that's actually culturally interesting.

> Bitcoin is very fungible.

As others have said, there's a record of your bitcoin's life, but there are also a fixed number of bitcoins.