I'm using the bitcoin as a investment because I think the bitcoin is gonna be very profitable in the future without any doubts, because of this I'm holding.
The price is gonna rise to a higher amount for sure!
It is right to use your bitcoin as investment, and with that I am sure that you may use your fiat for shopping etc, I will suggest you if you really want the success of bitcoin then try to adopt bitcoin as a currency also as with that you will try to put some more money to bitcoin also and the demand for the bitcoin users will increase and the community of bitcoin will increase more higher.