Okay so hi, I was wondering why Robbie isn't in the show anymore? I joined the fandom last season so I don't have any idea what happened behind the scenes pre-Season 12.
Writers move on!
It was a very sad day for me but that does unfortunately happen in show business! There was absolutely some tension between Robbie and TPTB at the time, AS EVIDENCED BY HIS SAVAGE FUCKING EXIT, but I can’t speak to whether that was really a contributing factor in his decision to leave. But I like to think that it was, for the #drama of it all.
Explanation on Robbie’s SPN career and final episode, plus why I’m willing to die for him, can be found below: