Running upstairs to escape someone. Locking the only door to a theater during an all-night rehearsal. Pausing while running away from a slasher. These are all terrible decisions people make in horror movies.
Some bad decisions make sense - characters do dumb things when they’re under duress, just like real humans. But there are plenty of other cases where it feels like writers just got lazy and needed to off a character, so they had them walk directly into a creepy basement where the villain's hiding.
Some of your favorite horror films probably involve at least one objectively bad decision that doesn’t make logical sense. In the moment, it's easy to gloss over what are arguably scary movie plot holes, especially if the surrounding action has you gripping the edge of your seat in terror. Even when you notice characters' awful choices, it can actually make the movie more fun (if less immersive). But for the love of Wes Craven, please stop running upstairs.