I mean let's face it, it's easier to handle money electronically than with papers in the hand. And if we compare fiat on the bank account and the blockchain money guesses who have the advantage...well not quite yet, but the potential for the blockchain is huge.
Well ro hold it physically yes fiat is more hassle, but I think if there was no fiat it is impossible for us to come up with the digital money from using goods as our way of payment , we will never come into digital age, without step by step being in that period. I guess the fact Bitcoin is here already, let us keep the fiat for the unbeliever to used, there is no certwin competition for that if both sides were useful.