What's the story?

I think Charles Dickens wrote the novel Great Expectations in order to express the theme that we will all have immense expectations that may or may not become our lives some day. He expressed this theme through his novel because, well, he is a writer, and it seems that's exactly what writers tend to do. They take our morals, ideas, and wonders of the world and incorporate them into fictionous novels for not only our mere enjoyment but rather as a life lesson. Some literart techniques that Dickens uses are his extensive amounts of metaphors and symbols that led me to this conclusion. Mrs. Havisham is not only a old woman there as a friend to Pip, but rather is a symbol of what we expect our lives to become. She represesnts the nothingness we become as our expectations become shit. Dickens takes these characters, like Mrs. Havisham, and uses her as a representation to not only Pip but to the readers as well. This comes to the conclusion that Dickens wrote Great Expectations to leave us with the lesson that our expectations may blind us from reality and may eventually make us into these terrible creatures.