If you are fortunate to go to a top tier university, many of the non-STEM classes will (hopefully) be taught by Professors who are active contributors to their fields, and use their lectures as a "rough draft" of a future book they will publish. Of what value being at the "cutting edge" of literary theory is up for debate, but there are some things that aren't easily available at your local public library.

Also sometimes it's just cool to have the guy who wrote the textbook be your professor.