Let's face it..As long as we continue to benchmark bitcoin against fiat, we can never reach that stage to independently claim "1 bitcoin is equal to 1 bitcoin" and that is no matter how hard you tried to convince people. Mainly this is what I feel is lacking and what I envision for bitcoin to become a currency of its own.
1 EURO is 1 EURO because it is inflationary. (In theory, Currency is stable, Product prices fluctuates).
1 BTC will never be 1 BTC because it is deflationary. (In theory, Products are stable, Currency price fluctuates).
(Products can never be stable, since supply and demand for those products fluctuates).
But, 1 BTC will one day equal 1 BTC, when 1 BTC has been permanently fixed in price. This can only happen when:
(1) BTC is the World Currency. (Gold, Oil, Fiat, and Etc all valued in BTC). Or
(2) BTC is permanently fixed to an inflationary currency. (Ex. EURO/USD/CNY).
So, to attain Satoshi Nakamotos original goal, we either use bitcoin as is, or we have to supersede all other fiat.
IMO, I consider BTC as a commodity, like Gold, even though it was intended as a currency.