Here's why:
* World War I: Fitzgerald left Princeton to join the US Army. He felt a patriotic duty to serve his country during the war.
* Health Issues: Fitzgerald also suffered from health problems during his time at Princeton, which may have contributed to his decision to leave.
While he didn't graduate from Princeton, Fitzgerald was a bright and talented student who excelled in literature and writing. His time at Princeton undoubtedly influenced his later literary work, particularly his novel *This Side of Paradise*, which was inspired by his experiences there.