I've gotten in that habit as well, but then, I'm a neat freak when it comes to git, always using `git add -p` and filtering out any unrelated changes into different commits. I'm often dismayed how sloppy other programmers are with git :)
Commit messages like "Ugh, I really need to commit more often. Did X, Y, Z, and maybe some other stuff." make me cringe. Those people need this change the most!