Actually no. All the gold mined by the end of the 2009 is around 165000 tonnes. That works out to only 0.0024 grams per one living person.
There actually is one other use for gold which nothing else can match: it would be the absolute ideal metal for waterfowl shot, half again denser than lead, soft, and totally inert. You'd have to alloy it with something to make it hard enough to not deform from acceleration, but you could kill geese all day long with 2.75" shells and #6 shot and probably #7.
Wouldn't that be cool?