I am using Bitcoin and Ethereum as a currency and it's working great for me.  I think when fiat begins to fail or if and when the central bankers pull the rug from the current system I believe crypto will be used as the sole currency.  No idea if it's Bitcoin, Ripple or some coin we have not seen yet.  This is all just allowed to be happening.  People usually die when they fuck with the central bankers money printing.