Hey, I accept pieces of paper (and now bits in a computer) for my valuable work, and bought a valuable home, car, and computer with those papers and bits.

Money works purely on belief. If we all suddenly disbelieved in the dollar, the value would be zero.

Curiously, most cycles of hyperinflation come more from loss of faith than from money printing. When people lose faith in a currency, they sell it off as a value store.

Elon Musk's net worth is $28B. His faith in a crypocurrency as a value store counts for a lot.