They were left for Santa to express our thanks for a job well done, our favorite muppet on Sesame Street enjoyed them immensely and they brought the family closer together as we baked them, ate them and licked the bowl clean of their batter.
Think of how many altercations could have been solved without blood shed and/or hurt feelings if we just brought cookies instead of harmful words and/or weapons. So brush the "chip" off your shoulder and next time you're caught with your hand in the cookie jar take responsibility for your own actions and don't go looking to blame someone else for your mistakes...because that's just the way the cookie crumbles.
Now go and enjoy and nice warm cookie with a stranger...the world would be a better place for it.
So give peace (and cookies) a chance.