Comment by Terr_

Cypto-currency has vanishingly few good and legitimate use cases, but:

> All wallets could become worthless in a weekend if a government makes the wrong stride in quantum research..

TBF, you could say something similar about all stocks remotely related to transportation the moment someone invents a teleporter.

I agree there's a difference there, but I don't think it has to do with the vulnerability of the asset.