Ever have a phone that no longer can take a charge? It is because of corrosion in the contacts. If those connections were coated with Gold you would not develop that problem. Gold does have useful properties beyond trade.
>>>...contacts. If those connections were coated with Gold...<<<
yes, it seems that all imported commercial electronics doesn’t/don’t have gold-plating over ohmic contacts, connectors, connections, couplings, plugs, etc. etc. - just plain brass, copper... - so they corrode, oxidize and fail in no time.