We get it. Writing TV shows can be a complex and difficult job. There are tons of different storylines happening at the same time and not all of them can always turn out great. However, pretending a storyline never even happened because you don't know how to resolve it is another thing entirely.
Would it be that hard to simply put one throwaway line that would explain why a certain plot line was abandoned? Well, the answer is yes, according to these 15 TV shows: