Ya. Lol. I know.
Sort like a story that I wrote when I was in Junior High — the story was running long so I killed everyone off. Everyone dead — “The End.”
Not like that at all. More like why in any war movie the 3rd act starts with one of the main characters getting killed. If a main source of the tension of your story is death you have to make sure the audience “remembers” that periodically, especially right before the big “final showdown” for a single story, or periodically in an ongoing series. It also gives you an opportunity for new main characters, handy for an ongoing series since you will always run out of stories to tell with a given set of characters.