Can’t eat it if you’re hungry. It won’t warm you if you’re cold or shelter you from the elements. It can only buy those things when they are in reasonable supply. Who wants to be found dead of starvation or exposure with a cache of gold?
It would make a good lead substitute for ammo, I suppose...
“It won’t warm you if you’re cold or shelter you from the elements.”
If you have enough of it, you can build a gold igloo. Touché!