"Revisiting HIMYM: Unresolved Plot Lines and Alternate Endings"

Fans of How I Met Your Mother believe that the show's biggest missed opportunity was the unresolved plotline involving Lily's time in San Francisco and her relationship with Marshall. Many hoped to see Lily pursuing her dream while maintaining her relationship with Marshall, ultimately leading to a happy conclusion. Others propose that it would've been more fitting for Lily to actually enjoy her life in San Francisco but then realize it's not the same without Marshall. The show failed to meet fans' expectations for how this situation could unfold, leaving many feeling unsatisfied with the outcome.