If a movie or TV show is successful, producers will clamor and fumble to get a sequel or reboot in action. There have been a few instances where the stars of the show refused to hop back on for another round of filming due to keeping the integrity of the show alive. Oftentimes, an actor's experience was so bad that they vehemently refused to get back on the crew. Money could often be an issue, too, or the actor became bigger than the show that made them famous.
There are a lot of stories as to why some actors would never return to their roots!
Charlie Hunnam, Sons of Anarchy
Charlie Hunnam played a dark and scary character in the hit TV show Sons of Anarchy. Jax Teller was not an easy character to play for Hunnam, who has had a decorated acting career. Since the show ended in 2014, people have still been asking Hunnam about his role on the show.