A very interesting subject indeed .Also with yourself @clivemartin you must be what is called **A very early Adopter ** just for taking an interest in it . So with that being the case it is a real shame that perhaps you did not invest 6,7 or even 8 years back but really it is probably a case of what business minded men & women you knew with the knowledge at the time .
With the question of it becoming a world currency is ,can the world governments firstly all get on **(Well South & North Korea are talking ) & secondly if it is decentralised how would they all manage there .