I think Buffett is attacking a straw man here. I don't think anybody is really arguing that BTC itself, as it exists as the balances of addresses on the blockchain, has intrinsic value. Just like fiat currency it has none. The <i>payment</i> technology, and the applications it enables, <i>do</i> have intrinsic value, however. He admits as much in this interview. He seems to recognize the distinction between a payment network and the currency itself.<p>That means as a first mover in this space, however, that BTC is likely to go up in value with adoption, and probably reach a peak and will either remain a widely used currency or be supplanted by a currency with more attractive monetary policy. That's what a lot of early adopters of BTC are speculating.<p>If there was a way for a casual investor to invest in the cryptocurrency space without investing in specifically BTC, I absolutely would sell my BTC and buy into it But to date there aren't any publically traded BTC companies, AFAIK (Please correct me if I'm wrong.)