My Sister's Keeper

Although I despise fiction, from the recommendation of a friend, I chose to read Jodi Picoult's novel, My Sister's Keeper. So far, I have read about 3/4 of the book, which follows the lives of a terminally ill child, her parents, and the younger sister that is keeping her alive. Each "chapter" is written in the perspective of one of the characters; my least favorite character is the lawyer, Campbell, while my favorite character is the younger sister, Anna. While I like the plot of My Sister's Keeper very much, I still can not get past the fact that it is a fictional piece of literature.