git add -p is extremely useful if I encounter a typo or something while doing some other change. Then I can commit this small unrelated change in its own commit without mixing with actual changes and without losing my context (of course this should be trivial stuff only, as it might be mixed up in the feature branch of current work)

I just review the diff before I commit.

I rarely use git add (basically only for new files or non-text files) and instead always use commit --patch.

TIL about this. I was using `git add -i` and using the patch function.