* Payments cannot be reversed
* Users are anonymous
Advantages.
As I wrote, bitcoiners call them advantages, but for the other 99.9% they are fatal flaws. A system that does not allow mistakes and crimes to be corrected is a stupid defective system. Anonymous accounts are much more useful to criminals than to honest people. The two together prevents enforcement of property rights.
If that were true there would not be cash. Everyone would simply use personal checks and use several forms of biometric ID.