What I'm about to write is completely speculation and I have no idea if what I'm saying is true. I believe that Dickens wrote Great Expectations the time that he came from, it was very hard to change social classes and Dickens wanted to convey to the world a book where people can read about a boy who has a chance to change his stars. The way the that Pip is described and who he is, at least at the beginning of the book, has us all rooting for him to do well and succeed. Well pretty much the plot of this story and the tone, as well as syntax and diction, lead me to believe that this the reason why Dickens wrote the book. The plot and the other literary devices make the reader want Pip to excel and go on to be great.
"It was like striking out a horseshoe complete"- simile
"Joe was a fair man, with curls of flaxen hair on each side of his smooth face, and with eyes of such a very undecided blue that they seemed to have somehow got mixed with their own whites"- Direct Characterizaion