Here's why:
* The show is over: Glee ended in 2015 and there are no plans for a revival or reboot.
* Lea Michele's departure: While she was a central character throughout the show's run, her character, Rachel Berry, had a conclusive ending.
* Controversy: Following the show's end, Lea Michele faced allegations of bullying and unprofessional behavior on set, which significantly damaged her public image.
While there's always a possibility for a cameo or a brief appearance in a future project related to Glee, a full-fledged return seems improbable.