While Moby Dick is a classic piece of literature, that does not reduce its importance or its relevance. The book's following of Ishmael's narrative allows for students to both speculate and discuss the intent of the narrative. Since the readers do not know if Ishmael is truly his name or his origin, the literature is interpretive. 
The book contains many metaphors about religion, meaning, and morality. These metaphorical qualities not only add to the story's character but allows insight into the characters and who they are as people. Ishmael's experience on the ship also highlights the diversity of characters, races, and experiences in the novel.
Though it does have a large focus on Ishmael's line of thinking and the knowledge he possesses, Moby Dick is an excellent introduction to classic American and romantic literature.