I think bitcoin will not replace gold. In terms of security investing gold is superior because its value is more stable than bitcoin and also there is a real gold, not like bitcoin. Moreover, all countries have agreed that gold as a wealth asset. Even more people are open to gold than bitcoin.
I believe that bitcoin and hold is different from each other and they are not comparisons, bitcoin is a digital numbers while gold is a precious treasures. We can use both of them in gaining through investing but we cannot really compare both gold and bitcoin, but is i have to choose one of it i will still choose bitcoin, because I believe that bitcoin is amazing than gold.