Draw us into the story.
Maintain our attention and fascination.
Provide a plot that twists, moves forward and takes us along with it.
Reveal information or possibilities that we have not previously considered.
Urge us to think about the characters and what their aims and intentions are.
Help us to understand something about our own situation and make sense of it.
Persuade us that we are participating in some way in the joys or conflicts of other lives.
In some cases, help us to ponder and reflect on an alternate reality and the many different ways people can be, not just today but at other periods in history.
We are all different. We all have different opinions, and when we pick up a book we are all looking for unique and varied experiences. That is why there are so many genres in literature (Crime, Mystery, Fantasy, Romance, Historical Fiction, Noir, Sci-fi and so on). All are valid, and all have their good and bad examples. If we enjoy what we read, and if the story coaxes us into altering our perceptions, even if ever so slightly, then it has succeeded in at least some of those points outlined above.
Who knows what we might find when we open the pages of a good book! The love of the Novel is a love of ideas and thought.
And, of course, it's always good to explore and to try new things.