Bitcoin offers an alternative to fiat currency. Yes, it is volatile right now. However, the fixed supply of 21 million Bitcoin means that it cannot be hyperinflated. Fiat currencies, on the other hand, have technically an infinite supply. This means that citizens need to have faith that their government and central banks will preserve their purchasing power. With that confidence broken, it appears that people are now choosing to place their faith in Bitcoin. This actually makes a lot of sense, seeing that Bitcoin is not controlled by any central bank or government. Capital controls cannot be imposed, and Bitcoin can be freely transacted across borders. Some countries still don't allow the use of btc,I think it will be really difficult.