This is a much more relevant and logical question than it might seems at first. A mater of fact is that, Gold, Bitcoin and Fiat currency be it Dollar, Pound, Euro or Yuan all share almost similar traits which fulfill Aristotle’s call for a currency to be functional and practical. But even then, Bitcoin trumps Gold on all of these properties. Bitcoin is fungible, and divisible. You can use fraction of Bitcoin and not a fraction of gold. Bitcoin is durable and portable in the same time. It shows resistance to counterfeit something lacking in Gold. So yeah, let it be the digital gold.