> Don't write unit tests. Don't accept pull requests. Simply write software for yourself and have fun doing it.

There's a careful balance here though right? For most projects your first users or clients are the unit tests. Why not have a future of repeatable client/user tests that insulate from regressions and to be your wingman to navigate future iterations? Also for me, I still review and accept my own pull requests on solo projects, because it is that last step when working on my own where I know I'm at a good point looking at my diffs and the last step in introducing mistakes.