Not necessarily (though I'm no doubt being too snarky).

It's common for goldbugs to compare stashing gold under a mattress with stashing green pieces of paper under a mattress, and note that the former has better investment return. When there's no economic reason that simply sitting on wealth (without loaning it out to some productive use) should make one wealthier.

The expectation that money should be a long-term store of value is, in fact, misguided.