The main problem I see with the current economic system is that finance becomes more and more decorrelated from production and consumption of actual goods, be they manufactured products, or services. Well, it shouldn't, otherwise crises happen, and they did happen - two in the 2000's - and they will happen again if nothing is done to fix the mess. (I believe nothing will be done, and we will pay dearly for this.) That Bitcoin thing tries to solve unessential problems, mostly ideological, while making early adopters rich. Should it really gain momentum, however, I see nothing in it that would alleviate the risk of a future financial crisis. On the contrary.