You know what this is kind of feeling where you are attached to something a lot and eventually you start thinking that it is the only last thing that should be out there in the world. It doesnt work like that mate, central banks may create a crypto currency some day but you know what, they will never ever be able to set up better infra structure than the fiat traditional system. Its you and me who are engaged in the crypto currency but not the whole world. I guess it will take ages to to understand the crypto currency mechanism for most of the generalised people and thus one the time it may just left out as useless currency. Thats not easy to adopt something new so fast, otherwise oil, gold, silver would have been the currency of this world already.