The problem is that volatility and a small market cap make it a worse unit of exchange.
(One of the big reasons is that you need liquidity to be useful, if you can't easily exchange them for something else when and where you need to, the permissionless digital exchange isn't very interesting)
(One of the big reasons is that you need liquidity to be useful, if you can't easily exchange them for something else when and where you need to, the permissionless digital exchange isn't very interesting)