If the entire earth's land is destroyed by radiation from a nuclear blast or by an asteroid, having seeds won't save you either.
Once upon a time I used to react when other traders had beliefs which differed from mine. Nowadays I tend to encourage it as they are paying. But for your benefit, yes gold can be yours and my saviour, once dumb money have been caught on the wrong side and capitulated at the bottom, dumping their 'precious saviour' gold holdings at the wrong time just like they bought at the wrong time. SP500 vs Gold vs USD, 20 years. https://www.barchart.com/stocks/quo...=Dxy00&axis2=false&axis3=false&isComparison=1
In the scenario depicted in the book "When Money Dies" IE post WWII Germany, Austria and Hungary though the governments were severely weakened there was still enough law & order that armed gangs were not ruling the neighborhoods, cities and states. At one point food was so precious that a grand piano was traded for a sack of potatoes. PS they did have rations...
If the crash is due to economic recession, then gold will do poorly, because gold protects against inflation, and most (not all) recessions are deflationary in nature. The big exception was "stagflation" of the 70s, which put gold on a rocketship. Another positive for gold is geopolitical uncertainty - i.e., the risk to the entire monetary system. However, I would rather have ammunition, canned food and gasoline in that case!
The expert said in time of trouble, buy gold (and sell US dollar). The expert also said in time of trouble, buy US dollar ( and sell gold ). __________________________
I think gold has more reverse correlation with your currency than your stock market, wherever you reside. In a crash you can short or buy puts, that served me well 2008-2009.