What you are describing is basically how any fiat currency is used, so it's definitely possible to live in bitcoin land. The issue is that price fluctuation for

What you are describing is basically how any fiat currency is used, so it's definitely possible to live in bitcoin land. The issue is that price fluctuation for bitcoin is so extreme, not that you can buy other currencies with it. If on Monday 1 USD buys 1 EUR and on Friday it buys 2 EUR you would have "overpaid" as well for many goods that you could have imported and maybe more directly if you had invested in EUR denominated securities etc..