[XorNot]

Fiat currency is backed by the legal obligations of the country that issues it that it is a suitable means to extinguish debts.

Bitcoin is not. No one is obliged to accept Bitcoin as a currency for settling debts anywhere in the world, it has to be converted to something else. Similarly to gold - you don't have to accept gold as payment for debt, but you do have to accept USD.

This is where the problem lies: BTC acts like a commodity, not a fiat currency - and people are treating it like one buying into it. The problem is it has no value as a commodity other then being Bitcoin.

[toozap]

It does have value. It's long lasting, pseudonymous, secure, and it costs less to make transfers between two parties. These are qualities that are hard to find in a physical commodity. What gives value to an individual bitcoin is the Bitcoin network. There is real value there.