This thread is a step lower than the Rage Spiral thread in that it's about shows that you enjoy with the exception of one or two things that drive you crazy, which may or may not have lead to you giving up on it. For me:
In spite of how ridiculous it is (and it is ridiculous), I really like Prodigal Son. But, I have a hard time getting past how young the lead characters' mother looks. The actors are only a few years apart in age, but that isn't uncommon when tv shows do the casting. However, typically, the actor playing the kid looks younger than their age. In this show? The actress looks way too young to be these kids' mother and it makes it difficult for me to concentrate on their scenes together.
Also, anytime the flaws of a character start getting worse to the point of being unbelievable: The dumb get dumber, the angry get angrier, etc. I may not give up on the show, but hate that and don't know why there's a tendency for writers to do it.