Gold has been around since time immemorial and has always held its value as the ultimate value item , it is for this reason that it is hard to imagine bitcoin just wiping away this legacy in a measly 5 years or whatever . There is noting to suggest that gold will loose its standard position in the whole scheme of things yes i will agree bitcoins will become a major means of exchange and value but gold is in a separate class and that position in my opinion will never be eroded by bitcoins , both will serve their purpose , they will be complimentary rather than adversarial to each other.