In honor of National Coffee Day, we are going to end the "Is coffee good for you?" debate once and for all by outlining what's good and what's terrible about the ol' brown stuff and letting you decide if the addiction is worth it. Should you put down the mug and enjoy a life of steady, consistent energy and healthy bowel movements? Or should you pick it up and revel in the delicious, hypomanic euphoria of a cup of joe? Or do you just keep doing what you're doing, but with a newfound smugness now that you know all these facts?