Currencies of other countries depreciate over time because they print money indiscriminately, when there is a crisis, they only know how to print money and print money, which gradually accumulates into a large tumor and will explode. It's only a matter of time. Meanwhile, the supply of bitcoins is limited, and almost impossible to generate more once mining is complete. With an asset with a finite supply and high demand, everyone will be scrambling, so saying bitcoin will depreciate like fiat is entirely inaccurate. The value of a thing decreases when the demand for it is gone, or they become too much, things that are scarce and in high demand never lose value.