I think gold and bitcoin can't be compared because the users have different views about the product, gold is a product that we can see and feel and we know since ancient times gold is a product of high value and it still survive until now , whereas bitcoin and crypto currency's is a valuable in the last few years and some people are less trusting and understand things about bitcoin right ... and then we do not know how long bitcoin will survive ... ?? ?? everything can change and we don't know that.