I watch some awful sh*t on tele. O mean, I watch some good stuff too but my taste is all over the place. I used to watch The Big Bang Theory and enjoyed it. And, to be fair, there are some small moments which are still pretty funny (Anything involving Will Wheaton). The characters were terrible stereotypes but I kind of got over it because there is an element of truth on them.
However I remember the EXACT moment I said "I'm done"
It was an episode where they wanted to get a table in the dining-room. Sheldon did his usual thing and got his way and the last line was "See Leonard? Sometimes the baby winds" and smirks. In that instant I immediately detested that character and cannot watch it.
I flick over every now and again and it makes my eye twitch whenever any of the main characters are on. As I said, there was a funny scene recently with Will Wheaton and Mark Hamil but that's it.
I also watched The Walking Dead and, while my interest had waned for a year or two I still turned it on. It had/(has?)
serious pacing issues: Good first and last episode per season. Loads of sh*t in the middle. But, as I said, I still watched. Until about 3 years ago. There was a scene where
Glen was swarmed by zombies and it looked like he was dead
You knew this wasn't the situation and you knew that it was going to be resolved in a week or two. But then they dragged it out for weeks until the "surprise" twist and I thought "Nope. Done. Life is too short"
So, tldr: When did you really start to dislike a show and stop watching? Use spoilers if required please.