Author here! Most of my projects are kind of like this penny arcade comic (https://www.penny-arcade.com/comic/2011/06/13/the-hippothala...) - I saw where something was not, and said "No. This will not do." It's 2024 and a supercomputer wrist watch is possible, so now it exists =)
I wonder what the fun part was, to them.
There is something rewarding about learning. There is something rewarding about completing things. There is something rewarding about showing other people.
I have the issue that everything I make should be practical. Either net me profit so I can make lots of money. Or useful to society so I can reduce the world's pain and increase pleasure, maybe this is a selfish way to fame.
I still get all 3 of those rewards I previously mentioned, but there is something different going on when I'm doing something for profit/others. Its a different feeling, not better/worse, just different. Better in some ways, worse in others.