- People ran productive economies for hundreds (thousands?) of years on the Gold standard and it worked.
- It's credibly neutral and no one gets the exorbitant privilege of printing money.
- The supply expands randomly when new deposits are found but this actually works pretty well. As the economy grows we get better at finding gold so prices stay relatively flat in real terms.
- On a gold standard people will waste real resources trying to extract gold to sit in a vault but people waste real resources trying to get printed money too.