Oh yes, quitting to watch before it's too late and everything positive once associated with the show has gone sour. I'm so with you on this, mostly because back in the late 1990s it took me one or two TV series too many before I had learned that particular lesson, the most obvious victim probably being the X Files, where I continued to watch right until the end of season 6 when I clearly should have stopped at the end of season 4.

You should have seen Cavendish's expression of disbelief, though, when nearing the end of our recent rewatch, I declared "So, up to this point and not one single episode further." ;-)