My 4Fs (Fiat Friends Family and Fools) ASK:

Bitcoin cannot be a currency because it only truly fulfills the function of a store of value!

I SAY:

Money needs its time to move from a collectible to price setter. It only happens immediately when there is a government that submits it into its people. Accepting BTC is an individual decision. It's organic. More and more merchants have Bitcoin Points of Sale. In Madeira, I got tired of paying in BTC, coffees, meals, drinks, gifts, I paid a lot in BTC. You only have to look at BTC MAP to see that there are more and more merchants accepting BTC. Check Madeira and Lugano. Two of the European Bitcoin Lighthouses!