> what use is a currency that no bank will store, no business will accept as payment, and nobody else has ever heard of

Apart from not stored at a traditional "bank" I think most popular cryptocurrencies have the other 2 aspects. I know it's not accepted by amazon but there are some stores that accept payments.

I think the exchanges act as the "banks" and, I maybe wrong, therefore should be regulated like banks and not the blockchain and the associated technologies because you don't need an exchange to store the currency, you can use your personal wallet or cold storage to store the money.

But on the other hand you can always convert them to standard currency when you need it, so that is not an issue. I just want to have a way to send money across borders without censorship (and not for any criminal activities) because my government and PayPal and banks are not allowing it.