Next time you write a commit message, try some of these suggestions as your imaginary audience:
- Yourself, next week, when you finally get back to working on this thing and can't remember where you were up to
- Yourself, when you get a pull request review and can't remember which commit something is in that needs to be removed
- Yourself, debugging how this ended up like this, 6 months from now
- Your colleague, eyeballing your work to see how you are getting on
Personally, I think of it as a note to myself. Like an alibi, if someone asks you what's already been done, or what this commit that removes one specific line from a long config file. Yes, I worked as a git consultant for a while, the delete-a-single-line with the commit message "Fixed" is always the culprit!
Further reading: https://cbea.ms/git-commit/