Most governments, not all of them, but most, certainly don't want their citizens using gold. They want them in the currency that they are creating. When they are debasing money, or printing money, they are spending it and they want it to have as much value as possible when they originally spend it. Of course once they spend it, it will lose value for them and everyone else that holds it. But they need demand for their currency. They need as many people as possible holding it and transacting it. The more people that use gold, the harder it makes it.