i think we have fath for gold because it is unique on this planet,different from any other metal.
No it's not. Platinum is close in value and usage to gold.
Gold is just used as currency because it's shiny, hard to mine, and easy to verify that it's actually pure. Sounds like something you know?
PS: Gold is not even the most expensive metal. That honor goes to platinum-190, at around $1 billion per ounce.