If you had to convert all your wealth to either Bitcoin or gold and keep it there for 10 years, which would you choose? Keep in mind the fact that Bitcoin has only been around for 5 years, and could be fundamentally different in any number of ways in 10 years.
Comparison between Bitcoin and gold, Bitcoin is a real currency unlike gold you need to sell it first before it become a real money. Bitcoin is very safe and secured while gold is not very safe and secured and there is a chance that can be steal by the thief.
To be fair, bitcoin wallets can be stolen too. And, you cannot implement BTC any other way than currency, electronic currency that is. Gold will retain its value to the end of times, more or less, because its a valuable material by itself.