what's the story?

Why do I think that Dickens wrote Great Expectations. Well like the guy from the doors said," he has a concert going on in his head and he;s just trying to wite it down," or something like that. But I think that Dickens just wanted to share that image in his mind with the world. Just from hearing how he wrote and acted out his characters, I can deduce that he was very passionate about his work. So obviously he wanted to share that. So thats why I think that he wrote it.