Well, if you look at the history the gold coins survived for thousands of years as a currency, then came the paper money it lasted for about 200 years. And here we are with the new bitcoin the digital currency. Many people compared bitcoin with gold, calling bitcoin the new gold 2.0. thus, if people start calling bitcoin as the new gold then there must be something great with bitcoin and because of that, I think the bitcoin will last for at least half the gold time which is a thousand years minimum.