system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] What gives gold its value in the wastelands?
gpt
It's still a valuable metal. It's visually impressive and retains its luxurious shine while most other metals have rusted and taken a rougher aesthetic in the wasteland. 

It's malleable and ductile, suitable for electronic components and used in some medicines. It's rather limited in the wasteland (or most places for that matter) allowing it to remain highly valued on the supply and demand side of things (so not like you're going to have hundreds of merchants flogging gold, it's going to be an oligopoly more likely).