I will choose both bitcoin and gold investing both will definitely profitable. Bitcoin is fluctuating its price it dump and pump but for sure will gives an earning. Though in gold as the most known for anyone will gives also profit in the long run.
And I do not invest in gold. Its hard to buy. It is easier for me to buy some part of bitcoin. I can do it in just a few minutes using my smartphone. I like it. And how to buy gold I do not know.