John Hughes was, by his own admission, a very ordinary, non-exceptional kid. He didn’t even have a particularly noteworthy high school life, which is somewhat ironic given how effortlessly he managed to convey it in his film work.
He may not have been the kid he portrayed in his movies, but he related to them and wanted to show the world they weren’t as bad as other films routinely made them out to be. One of Hughes’ defining characteristics was his ability to see teenagers not as kids or as young adults, but as people. This, in turn, ensured that his films connected with a sizeable audience.