BTC is not a transaction type of currency, it is a store of value currency.
I prefer to think of it as a value transfer system.
Most people other than speculators who use Bitcoin, use it to send money quickly and cheaply to other parts of the world, at least at this time.
Quickly is probably overstating things. You can send BTC easily enough, but the process for converting to a locally usable currency is still pretty awful.
As far as being a store of value it's not a very good one right now. Storing value implies value can be predicted over time, and with BTC that isn't the case, yet.q