According to me the real problem is with deflation. Consider this, the value of money is more in future. So we have to change our TVM concepts. The new Bitcom TVM will be FV = PV/(1+r)^n. Now people will defer their spending to future, apart from basic needs, just because they can buy their products cheap in future. Imagine the problems people will face because of this! People with highest number of Bitcoms will actually be the wealthiest people in the world. Better off with the good old fiat currency!