Obviously, that is digital currency, it has no physical coin at all. And not all people don't have a faith in bitcoin, they just don't know what is bitcoin and what it holds in the future. Another thing, not all people like to hold their money, especially when you have too much, they keep it in a bank and own an ATM for withdrawing if they needed them. It is like bitcoin if you ask me,but, the bank is yourself and you supervise your own money. There are many difference of bitcoin into fiat, what I love is it's decentralization.