Yeah yeah like all the cool kids in this thread I move on and it doesn't bother me, blah blah blah.

That said, a poor ending can taint my experience with the series as a whole—eroding my willingness to re-engage with the media.

For example, I adored Battlestar Galactica. Watched every episode, bought the DVDs, argued about it online, and all the usual fan shit. But after the rough final season(s) and craptactular finale, those DVDs started collecting dust. Haven't seen an episode in years.