Gold is a safe investment both for short or long term investment. The characteristic is not volatile, it will keep increasing along the time. However, the increase will not jump as high.
Bitcoin is a very promising investment, you can gain high profits only in a short time. However on the other hand, you may also lose a high amount in a short time. For, Bitcoin is high volatility, it is always fluctuating. We can control the price of BTC because the price will depend on the market.
Please tell me when do you think Bitcoin will replace gold as a safe haven and why?
I will not think about it because BTC will not replace gold. The two will exist and develop together without another should be replaced or replacing. They are a great investment for all.
Gold is really a good store of value compared to bitcoin that is very volatile in the market, and its price varies in time either up or down. That's why you should also manipulate your asset and not rely on the environment because market is not that stable. BTC is good in a market when you manipulate it based on the right time where its price is in its peak, Gold is just a store of value where you can really touch them and wait for the right time for it to sell. If you really want a high profit in a short period of time then choose bitcoin, but if you want a profit for a life long value then you should invest in Gold. The only thing you need is to watch for the movement in the market to prevent losses in your investment.