Earlier quoted context omitted.
But it is not that black and white, is it? While it is quite clear that Bitcoin has "value" as long as people are willing to trade it (i.e., indefinitely), there is still no reason to assume that it will ever stop having these extreme fluctuations. To the contrary, I'd say that, as time progresses, we observe Bitcoin having the same problems that the gold standard had, mixed with an additional proneness to speculatio…
The value of a currency lies entirely in the perception of that value. I don't consider bitcoin different from a traditional currency, except that its rate of production is known in advance. It will keep having value because by now enough people think it does.
Once things begin to be priced in bitcoin, proponents hope its value will stabilize. This might happen. It did with fiat, but fiat had the advantage of a stable start and slow detachment from gold.
The real funny thing to me is, I believe the currency could do its job just as well no matter what the value per bitcoin. And I don't think volatility matters at all, because companies like BitPay assume the volatility risk for you (both the merchant and the consumer)
I don't know that bitcoin can be used as a store of value, especially for future adopters. But it is definitely a great method for real transactions of wealth.