Comment Nothing backs it (Score 5, Insightful) 110
There is no reason bitcoin can't slide back to being worth a dollar a coin. There no guarantee of value behind it. You can argue about whether fiat money is any better once the US went off the gold standard, but there is still a bit of irreplaceable value there; "the full faith and credit" means you can use it to transact business with the government, both by contracting to do public works for which the government pays you, and paying taxes and fees which are used to perform government functions and give you tokens such as licenses which show that you've contributed your share. Money's very liquidity for these purposes is a source of value, even if you can't redeem your picture of a President for precious metal. By contrast, Bitcoin literally isn't worth anything unless you can find someone (for some reason the phrase "bigger fool" comes to mind) to trade you something for it that does have value.