haste is bad for programmers, you hastily click a button and later find that it was a mistake, you click on some other button to fix that and you just pinged/notified/disturbed others (twice) cc'd on that page.
you might delete some important data or you might configure some wrong setting on the server which might potentially affect thousands of users. you merge an untested patch at the last minute which might break the release.
so think twice before performing any action. speak out what you are about to do and ask your rubber duck "is it the right thing to do".