As John Green will tell you himself, life isn't always sugar coated, and sweet. Throughout high school, this widely-loved author was bullied. A lot. I now understand why he writes these real and believable stories. He hated being a teenager, and he feels that he needs to warn teens that high school isn't just prom and making memories with all your friends. Sometimes you don't get to see what happens beyond being a teenager, sometimes you have to grow up too early, you never know.
Green also worked at a hospital for a while, and made a connection with many teens with deadly illnesses. In a biography I read, he states how he hated how overlooked they are in stories and movies, and how his hurt inspired him. I greatly appreciate him making their stories known, as I have a cousin who is fighting against her own body right now.