Most of the central banks have gold reserves as a store of value, some of them expanding them (most notably China and Russia). For individuals it is less popular, but still I wouldn't say "nobody uses gold".
But aren't those gold reserves a tiny fraction of the actual cash circulating in the economy? What use does Bitcoin serve in this aspect? And I don't think that Bitcoin and Gold are really comparable. In the event of some national/international crisis, the gold is still going to be there. I don't think you can reasonably make the same guarantee about something like Bitcoin.
