Bitcoin is NOT a currency!
What do you think?
The question is very simple. Can we buy something with bitcoin? Yes. Can we buy a Dell computer with bitcoin? Yes. Can we buy a windows operative system with bitcoin? Yes. Can we buy hundred of things with bitcoin? Yes. It is bitcoin accepted as a money by multiplies merchants? Yes. Is there that merchants are increasing or diminishing? It is increasing.
Whatever it will be the name that can take bitcoin it serve as a tool which substitute the money or the currency? The name that can take can be whatever you want. But the function it have is the function of the money and the currency.
That is true, if you can make purchases using bitcoins, then definitely it is a currency, we cannot say it as a major currency as of now, but yes even it is secondary currency it is benefiting us by paying for our necessities and we can pay it for the exchange of goods and even to convert it into our local currency. So for me it is a currency.