Gold is considered as asset and risk less investment its price has some control if you compare in the last 10 years you can evaluate what Gold give returns to its investers. If you look about Bitcoin in the last ten years of its performance no one can imagine the rate of it so considering and comparing the Gold v/s Bitcoin performance I prefer Bitcoin Only.
You might be right. Gold is good for invesment, also house and property is good for invesment too. I never heard that the price of a house get down every year. They will always go up. So it is a 100% sure invesment.
Bitcoin in the other hand is simple invesment. Anyone can invest in it, even student and unemployment people can invest. The price can go down, but on for a short of time. It will rise again in several years and give us profit. The thing is, Bitcoin is so easy to collect and buy. That is why it is an opportunity to us and we still do not know how much the Bitcoin price can go.