Gold is not superior to copper for everything - incl. the most important one feature: conductivity. Gold (22.14 nΩ⋅m) is, of course, a lot less chemically activ

Gold is not superior to copper for everything - incl. the most important one feature: conductivity. Gold (22.14 nΩ⋅m) is, of course, a lot less chemically active which makes it ideal for terminals, contacts, etc. (and mostly as plating agent), however as a sole conductor it's worse than copper (16.78 nΩ⋅m). Gold has worse thermal conductivity as well... and it's a lot heavier. That being said, it's still a very valuable material for electronics.