Strange that the emergence of non-State digital cryptocurrencies was not even mentioned in this article. Is it that radical to envision that perhaps one day the successor to the U.S. dollar might not be fiat currency backed by any single state?
You can survive by using a cryptocurrency as long as you're poor, or as long as you exist on the margins.
If you have a job, the government will mandate that you get paid in "real money" and it will demand its not-inconsiderable cut in taxes. You want to buy some food? Ok, buy it in bitcoin, but give us our 8% sales tax in "real money". Property tax on your house? That's 3% of assessed value, "real money" only. Etc.
As one pundit tweeted: "You know what's cooler than a million dollars? Virtual currency backed by nothing and nobody."