Gold is a long term low risk investment, the profit is relatively lower than BTC but the growth potential isn't bad at all [check the graph about gold prices in 20 years or so], it isn't that safe too considering the recent downward spiral, every investment has a risk and the trader just need to decide if it's appropriate for him/her or not
If we are to draw conclusions based on the past performance, gold is not so good for increasing your wealth
I posted that chart a few times already here (you may look for it in Google), but for the last forty years or so gold has been on par with dollar inflation (in fact, it was underperforming most of that time), while, for example, the US treasuries (US government bonds) have been slightly outperforming dollar inflation over long terms. This is not to say that gold is a bad store of value (sort of last resort) but it obviously comes at a price, i.e. not without disadvantages