This is a very privileged, first-world perspective on things. You probably have a checking account, and a debit card. If you only have cash, and want to send money to (for example) family in another country, it gets very expensive, very fast.
Exchanging cash for cryptocurrency without a bank inbetween is a pain in the ass, but its a hell of a lot cheaper than, for example, Western Union.
Exchanging cash for cryptocurrency without a bank inbetween is a pain in the ass, but its a hell of a lot cheaper than, for example, Western Union.