I've been trading as well like buying some coins such as Lisk, WAVES and BRK lately thru the bitcoins I've earned so yeah i'm spending by btc. Not for a commodity though. if I can spend btc on grocery store i may have spend more to the food i would eat than to the coins.
Yes I guess that is still spending. I do also change it to fiat for many times. I think as long as there is this transaction it is still spending even just putting it in a different wallet for you also pay for that.
True. Convenience is a great factor. We dont want anything that takes so long to transact and getting a hard time to send it. This is where bitcoin enters for it can give all of that. Even exchanhing it to fiat is gettig faster.
Bitcoin transactions are transparent for sure and above all the credits are instant which makes bitcoin unique from other payment systems.