If you take away the management of money away from the state, who do you task to do this? In any organization, private or public, corruption and theft are present. We are dealing with human greed and a lust for power and control. Bitcoin kind of solve that problem with the protocol restrictions and the consensus and public participation, but the developers in charge is still the weak points. < These people can still be bribed and influenced >
What solution are you putting on the table to take out the human element out of this?
Money should be treated as any other commodity, whose value is totally determined by the marketplace. This regime has already been tested with great success during the Italian Renaissance and the Scottish 'free banking' era (not due to an enlightened public but due to accidents of geopolitics.)
This is not necessarily (and probably won't be, thankfully) a return to 'hard' money. Savers could have great confidence in a script I issue in my garage, provided that whatever venture backs that script is determined to be a good bet by the market. When capital's value and confidence is determined by state-free supply and demand, capital tends to flow in productive directions and savings tend to be safe.
With the right incentives, banking can play its role as financial innovator and a great engine of growth, without destabilizing the economy.
It's only modern economists who tell us money has to be managed by some central authority. (The same economists who unanimously endorsed the gold standard in its day, and unanimously condemn it today -- both times saying just what the elites want them to.)
It is true that we still won't get total honesty. Bitcoin has money 'stolen' from 'hacked' exchanges, but if you leave most of your savings on an exchange, you probably should lose it to learn a life lesson! We can't guarantee honesty, but we can set up the right incentives, which will go a long way.
In the big picture, it's quite possible what the public lack is simply a kind of rough understanding.
In a more philosophical sense, it remains to be seen whether a population not well versed in the conceptual tools required by monetary and financial thinking can ultimately hold to account an elite determined to skim off the cream of their labor and destabilize everything in life. A blanket rule that imposes simplicity might work, but at this philosophical level all we have are opinions, and nobody knows. So I'd say let's give it a try, and a really good try. If we decide to give up, on the other hand, we have to be very, very careful to examine our motivation, in case it's really a form of expedience (not necessarily personal, but possibly over short-term issues in the economy.)