I dont know who would actually make the switch. Bitcoin is similar to gold in many ways, only its much more convenient and because of its decentralisation its an amazing inflation hedge (as some already said). Store of value and liquidity is not an issue for bitcoin.
I do think so, bitcoin is just similar to gold because it is valuable now but what if time willl come that it will be just priced as a hundred dollars ? Gold has so much more option not just bars. Hence, bitcoin contains high volatility that will make the asset uncertain and unstable.