I count myself amongst those who lack the cognitive capacity to truly see the potential. I don't embrace digital currency but I don't reject it outright.
Giving digital currency the benefit of the doubt (that it is more than a get rich quick scheme), how is it useful as a method to trade goods and services? How is it better than cash?
Using Bitcoin as an example, in a short time it went from $16k to 100k. If I use it to buy anything (a dozen eggs), that is mind-boggling deflationary. Conversely, if it drops from 100k to 80k, that is inflationary. Suddenly my Bitcoin buys fewer eggs.
Going from 16k to 100k sounds great if you're holding Bitcoin, but deflation is as bad as inflation. All those egg producers can't afford to pay rent and the poor chickens need to lay a shit-ton more eggs to keep up. How is such an unstable money system useful for it's stated goal of a trusted permissionless trading platform? Yes, the government can't interfer with my egg purchase, but has limited benefit with such an unstable currency.
I have a hard time believing that these people understand it either, aside from the one goal of profiting from it. They look like the same people who brought us the CDO and mortgage backed securities (a better analogy than tulips imho.)
From the NYTimes, digital traders attending an inaugural party: