system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] Why does pre-war money still have value with traders 200 years later?

Did the US not abandon the gold standard in the Fallout universe? Or do merchants just like collecting old money for historical/sentimental value?
gpt
Money is a paper and cloth mixture, which can be useful for crafting or as firestarting material. And yes, lots of people like collecting it for sentimental value. Just look at the craze around rare bottle caps.