Warren Buffet says cryptocurrencies will almost certainly end badly?
Slight change.Some cryptocurrencies will end badly. Others will not. U need to pick the right ones.
 I  think Buffet has underestimated what has been created here. A good crypto programme is like a living thing. U send it into the computing world and it has a life of its own. U can hardly kill it anymore than u can wipe out a bacterium. Cryptocurrencies strike at the very base of what a currency is. It is more basic than say coins, fiat currency etc. It is a bit like the Rai stones used by Yap people in the Pacific, except that the whole thing is in a computer. There is no killing this. The values might change, new currencies will come and go, but cryptos are going to st. As people becomemore adept at comps as the younger generation in ever continent is , their use will only go up. If the market cap is 500 billion now, it will be 10 trillion in  a few years.

Until now, creating money was the power held by a few banks, now it is in the hands of every programmer. That is the change and I don't think bankers like it too much. But both Dimon and Buffet are wrong. The share price of JP Morgan Chase will come down to zero before bitcoin price becomes zero.