There are so many goods and bad's that people say about coffee and the next month it's a whole different story. I gave up trying to figure out if it's good or bad for you and so has the health world. I just love my morning coffee, no matter what.
Actually, I love coffee but once I switched to decaf I fell into a very sleepy and irritated state called caffeine withdrawal.
http://cdn-media-1.lifehack.org/wp-content/files/2013/11/coffee-cons-pros.jpg
^ A good overall depiction of coffee pros and cons in one picture