It's a deflationary currency. I hear the country got into trouble with those 90 years ago, but if the only alternative is a hyperinflationary currency, the dynamics of a deflationary currency might be a danger worth approaching.
It's not so much a deflationary currency as an unstable one; its value has gone from $100 (or even less, the charts don't go back that far) to over $60.000 and back to the $20.000 range. That's incredibly unstable and not something I'd willingly would choose as a currency.
Temporarily deflationary, when all Bitcoins are mined what happens next?
If by some weird magic I had today all the BTCs forever locked in Nakamoto's wallet, currently around $23 billion, I would give them all away just to be able to live in 2140, the year the last BTC will be mined. So I guess BTC is actually a currency after all, haha.
presumably, a static supply in a growing(?) economy means it continues its deflationary dynamics.
And the miners would all shut down because no one's transacting with it