Regularly small amount of bitcoin is saved and the rest will be used for fun. Most of the time gambling is the one in which bitcoin is spend to have fun. Future need of bitcoin is to profit much from it and make a good earning for a better living. I believe bitcoin saving will make ones life to the next level with its strength.
If you are gambling then you are not having fun because you are wasting money and time for your future and that is what i believe because in gambling there is no possibility for you to be a millionaire unless you will create your own gambling site but if you are not that professional or expert in gambling then you will just lose money over and over again.