One thing that I wonder about with respect to Bitcoin is the issue of taxation. Governments can support the dominance of their currency within their borders by

One thing that I wonder about with respect to Bitcoin is the issue of taxation. Governments can support the dominance of their currency within their borders by compelling their citizens to pay taxes in the national currency. And on the "supply-side", in the US at least, federal spending is a significant portion of GDP, so you will always have a large amount of dollars floating around being used as a means of credit, exchange, and value. And finally, having control of interest rates is a powerful tool to support economic growth - I would be fearful of a world where policymakers did not have that ability.