I do get your point but I think the reason why some people still prefer gold over bitcoin is because of having a stable market and intrinsic value which is used in different aspects of our life specifically technology. It's a much safer investment than BTC since it has stable demand and actual usage even though BTC has high profitability but still a risky investment.
It should not be really a big problem when it comes in investing if we have too much money then investing in both is the nicest to do as we need to put our investment in different baskets to avoid too much risk and both have shown profit in the long run. Just look at their value 5years ago and how their price pump up to now when we sell them. The only problem will occur when we only have few money and wanted to invest it on both we need to determine what we wanted most, the less risky or the one we can manage to see the price goes up and down in tome of trading.