I don't generally keep a list of the things I can't get into ... but one thing that springs to mind is The Nightmare Before Christmas. I have a Halloween-obsessed friend who always raves about how great it is. Last holiday season, my daughters and I tried to watch it and could only get through about the first third before we decided it wasn't to our taste.
Never having read the books (I still haven't), I really liked the premise of the White Walkers from episode 1, but was disappointed that they didn't really show up again for the rest of that season. "Hard Home" was the high point of the series, as far as I'm concerned.
Out of curiosity: all you folks who say you couldn't get into shows like Game of Thrones or Sherlock or whatever ... what are some examples of shows you do like and that you consider to have good writing / acting / etc? This is all subjective, right, but it could be useful to have some means of comparison.