So only Road Warriors will be all that's left? I think this has drifted into fantasy now, though I will point out that the people trying to rebuild civilization did win out over the Lord Humungus in the end. And once civilization resumes gold and silver will again be valuable.Gold will be worth nothing because all the humans who value it would be dead too. Im talking about back to square one end of the world as we know it, not entirely. If you think crypto isn't backed by anything, I have some bad news for you about fiat currencies. Cash and money in your bank account can also be hacked or stolen with impunity. It's really not complicated when you set aside the concept of paper money backed only by a promise that it's value is stable because they're not going to print more....oh wait. Something is only worth what someone else will trade you for it.
I highlighted your last statement because it is true. But... My point is this: That you don't want/value gold means that and nothing more YOU don't value it. It does not mean that nobody else will want it. Using ammo as currency is equally fraught. What good is your 9mm to me if all I have is a 1911 in .45acp? You have to go find someone who wants/needs 9mm as I would have to find someone who wants my gold. Too many people who think that all they need is guns and ammo to get by. Most think they can hunt for their food etc, but some think they can be predators. For those morons who think they will just take what they want by force I always advise them to where something bright and cheery so they can look festive as they're hanging from a tree or lamp post.
As I and many others have said before, gold is a tool, one item of many to offer as trade. If some post apocalyptic guy said he'll trade you a tank of gas for 200 rounds of 9mm OR an ounce of gold, which would you trade? That ounce of gold cost $1800 when money meant something whereas 200 rounds of 9mm was $80. For myself I hand over the coin and say "Fill her up!" $1800 for a tank of gas! But if I need that fuel and that guy will take that gold coin then I call it a bargain.
It will be a seller's market in our post apocalyptic, road warrior world so it would be best to have as many options for trade as you can. After all, trade is a fundamental part of building or rebuilding a civilization.