Steven Moffat Explains Why Many ‘Doctor Who’ Companions Have Sad or Bittersweet Endings

Before a reboot in 2005, companions were often swapped out without much explanation. But nowadays, some have met their end, others have been transported to different dimensions, and a few have had their memories erased for safety reasons. As Steven Moffat stated during his interview with Radio Times, the reason behind this is straightforward: they wouldn’t willingly give up traveling with The Doctor if given the choice.