The Stranger Things finale has come and gone. And it's fair to say that reactions have been mixed. While some fans and critics thought it was a decent wrap-up to the series, others felt it was a by-the-numbers, somewhat tame conclusion. The Rotten Tomatoes score for the episode is a solid 82 percent, but the debate among fans is still raging. Was this the best way to wrap up a series? The worst? Just fine?
The truth is, series finales are hard — just ask Seinfeld fans. But when we look specifically at the series finales of science-fiction TV shows, there are certainly moments that were just as controversial, if not more controversial, than Stranger Things Season 5. Here are five sci-fi series finales that range from debatable to despised.
