Why does real life not provide the same gratification hormones?

Obviously it should make me feel much happier and accomplished to do literally anything constructive with my time, even more so when my bank account total goes up from getting paid, than to have a mediocre time getting dunked on in an online shooter, but it doesn't work that way...

Are there any studies done on this? I know there are apps and systems that attempt to do just this, gameifying real life chores with moderate success. Why does this not work as well as one would expect? The psychology should be very interesting.