Of course I choose both, fun because the transactions bitcoin faster and cheaper while the future purpose because bitcoin has been proven and tested to be the best investment at this time.
We are the same, I save bitcoin for fun and for the future. I know that the new things we're fun to use as it is new and only few knew about it and how to use it. if your friends saw you using bitcoin transaction they are confused on what they are doing and want to know what and how do bitcoin works. While on future I want to save bitcoin for my future as It has rising value and now I will clearly say that I have a good profit because of bitcoin.