This was Hal Finney (RIP) 14 years ago, a week after bitcoin started, when it was worth nothing. Still the same general argument.
We think bitcoin is the best store of value because you can create or dig up more of everything else. Because it's got the best technical properties the value of everything else used as a store of value should collapse into bitcoin.
Price can only go up over the long term, even if you don't believe it eats everything else.
