This is where I run into the situation where I feel like a pig looking at a wristwatch. If that fiat currency fails, then wouldn’t your gold be worth less because of that failing currency? If that currency fails, then how would you sell that gold? Or would you?
Gold will have value yet, because it is a precious metal, that people covet in the past, and will covet in the future. Currency in the USA used to be backed by gold before the Fed was created. It will have value for many reasons. People will always need something to conduct transactions with, and precious metals will always have their place.