Sometimes, when making a movie, it needs a sequel to help carry out its ending, and it can get a pretty good one. However, sometimes there's a movie that has a perfect, or at least decent, ending that it doesn't really need a sequel, and is better off as just a one-time film (but that doesn't stop Hollywood from giving it an unnecessary sequel that COMPLETELY ruins the film).
For this list, choose movies YOU think were better as one-time films and didn't really need any sequels (but sadly suffered the unfortunate fate).