Bitcoin and its ilk are going to repeat the issues the US had when small and regional banks all printed their own bills. Their info infrastructure were large books, updated monthly that provided info to determine exchange rates/values. People didn't like getting burned everywhere on transaction costs and their value going poof when unsavory characters ran the underlying banks into the ground or rumors about the stability of far off banks were spread.

Centralized. government-backed fiat currencies solve many issues that most Bitbugs are coming to grips with the hard way. It's those issues which are exposed publicly and quickly which will keep it the most amazing speculative financial invention to a group of fiercely, independently minded folks who have the skills and means to gloss over all the failings of such a device being a proxy for fiat currency. It's just another layer of abstraction, not a replacement. And it's a leaky abstraction.