Handle9:
I'm not sure why OP wants to use crypto instead of a currency.
Crypto will probably provide some very interesting use cases for transactions but at the moment it's way too wild west and fragmented to be much use. At the moment it's primary use is gambling/speculation.
Two use cases.
I'm seeing a few internet facilities (tip jar/donations/subscriptions) that are using crypto.
It's becoming more common to send remittances with crypto. Avoiding dilution from margins/exchange rates and high wire fees. You send it to a trusty intermediary and they give cash to the remote person. Where before someone sends a larger amount monthly/quarterly, you are able to send smaller amounts more frequently with your phone.