I get a real joy out of developing software. I have, for all my adult life. The fact that it paid well, was gravy.
I do feel that I was incredibly fortunate to have landed into a field that I already loved. I guess that my loving it, made me much better at it.
Of course, there were lots of "friction points," along the way. Working for myself, in retirement, has removed all of them. The one thing that I miss, is working in a team.