I'm not disputing the value a cryptocurrency may have as e speculative venture. Or about the opportunity it offers compared to gold or anything else. What I'm talking about is the misconception people have about privacy and security. Due to its intrinsic "virtuality" cryptocurrencies allow transactions to be 100% traceable. Plus your money is yours as long as you have electricity, hardware, software, network access, ISP etc. And assuming authorities let you use it. Take just one of those services out and your money technically can't be used. Or even if you can use the services but is denied access to the hardware ( cellphone or computer) your money is again technically of no value. If everything goes ok, no problems. But if a situation arise and any of the services above is disrupted you have nothing.