A decentralised currency for world trade that doesn't allow an arbitrarily chosen country to profit by simply printing notes and skimming off the top?
A payment system that doesn't pick an arbitrary corporation to rake in all the profits by nickel-and-diming every transaction in an economy?
It's also a currency where 75% of all possible coins are currently in circulation and in the hands of a tiny amount of people who are bound to become the new one-percenters (if not 0.01%) if it truly becomes the "world trade currency". With the added benefit to be almost impossible to trace and therefore to tax if the holder is even a little be clever.
I'm not saying that it's all white or all black but I'm a bit tired of the cynical libertarian cryptocurrency kool aid. "The current system is flawed, let's break everything and see what happens". And let's make a quick million while we're at it, a new sucker is born every minute.
Given how easy it seems to evade taxes nowadays when you're super rich I can't imagine how it'd be when anybody can basically generate a new untraceable wallet for any transaction. Corruption will never have been so lucrative.