I agree that bitcoin is faster in terms of creating returns for its investors but we should remember that there are different type of investors, there are conservative and there are risk takers who can risk majority of their capital for a higher and faster reward. For me, gold is a good investment to diversify some of our money so we can have a back up for bitcoin.
Investing with Bitcoin is certainly too risky but also very profitable, you have to be really ready if your assets will run out in a flash or grow to 100%. Meanwhile, if investing with gold, it will always be stable of your assets. I agree investment with gold is the right choice in this era.