Metamorphosis

The use of much of the story from the point of view of Gregor Samsa combined with the overview of the behavior of his family in reaction to the "metamorphosis" gives us a feeling of sympathy for the changes that Gregor is trying to deal with while also showing us that his family has no reaction to this huge tragedy except that they can "mooch" off of his efforts any more. They care nothing about him, even as the reader knows that he is suffering.