What is gold good for? Would you buy a cofee with it? Do you use it for chemical experiments at home? Majority of people don't need gold, either. Why do we trus

What is gold good for? Would you buy a cofee with it? Do you use it for chemical experiments at home? Majority of people don't need gold, either. Why do we trust fiat money? Why do we think that car or laptop is worth what it is?