To invest, I would lean towards gold.
To invest and make profits, you need to take a risk, and both bitcoin and gold are a good for investing, but while gold offers safer and lower returns, bitcoin
on the other hand offers not so safe, but possible very high returns. So in the end , its just a matter of taste what u like more. I choose bitcoin, and altho i realise the risk is great, i cant help myself thinking about all the possible gains i could get one day in return. Your money, your decision.