I will prefer to invest in both of them as you cannot rely only on single form of investment so its always good to invest in multiple products to divide the risks so even if one fails you can expect some profits from the other one.
yeah there always a good and bad side on anything ,
include investment , really you can not choosing both investment ,
and the real problem here is not on that matter ,
but more to what is better among them? and i will say it is bitcoin , soon or later gold could be outdated in tech age.
There are many people who don't believe in innovative technology and will prefer to go with traditional ways of investment and their first choice will be always gold and even if bitcoin becomes more popular in future I don't think that people will stop investing in gold.