But many people have themselves or have family/friends that need to save their money, or escape with their money. Or, recently: escape with all banking cards being blocked and find themselves having to live off Bitcoin. Cryptocurrencies are solving very real problems right now, for millions of people in Latin America, Asia and Europe:
1. They help remit money across the globe: Hawala network is way more scalable since there is a secure global settlement layer - the blockchain. No need to have 3-4 hops through trusted parties. You can directly exchange cash for bitcoin in one place and the opposite in another.
2. They help moving personal cash across the border: if you can't trust or use your bank, you won't be able to safely move more than a small pack of $$$ through customs. Crypto is your only option to save your money.
3. They help you pay the bills wherever you are regardless of your residence/visa status. You may not be able to open a bank account in a foreign country, but you would be able to book a flight, a place to live, pay for taxi, pay for cellphone, pay for food delivery through crypto-interfaces such as cheapair, travala and gift-card gateways like bitrefill to use amazon/uber/airbnb/careem and thousands of other merchants.