Gold is hard, even very hard, but BTC is harder.
BTC is limited to 21mil, then it's over - mathematically 100% safe.

Gold is mined 2% every year and nobody knows exactly how much is left in the ground or anywhere else. So mathematically it is not 100% safe.

That's why BTC will win the race. But in my opinion, you should have both, because gold also works without electricity. And it's best to have a good knowledge of many things in your head and, of course, manual dexterity. Then it fits from my point of view.