A morte só terminará o ciclo quando for o único caminho. Além disso, está escrito no livro.
No Groundhog Day Phil - o personagem principal
tries to kill himself to end the loop, but he has unfinished tasks to complete and the purpose of the time loop is to complete them, therefore his death isn't the answer.
Em Feliz Dia da Morte
Basicamente, embora Sam possa ter encontrado outra maneira de salvar Julia, foi o que ela precisou fazer, porque o loop terminou. Sua tarefa de salvar Julia estava completa, e ela se sacrificou por isso - cabendo considerar que ela era parte da razão pela qual ela estava tentando cometer suicídio em primeiro lugar.tree repeatedly dies while trying to find her killer, but she lives another day, because she also has unfinished tasks to complete that won't allow her death to be the answer.
Se houvesse outra maneira, o loop provavelmente a mandaria de volta para encontrar outro caminho, e embora talvez ela não devesse ter começado algo que ela não pudesse terminar com sua paixão, ela provavelmente pensou que era melhor deixá-lo com algo do que deixá-lo com ele sem nunca saber o mesmo.
Isto é de uma entrevista com o diretor-Russo Young - sobre o final, e acontece que no livro ela estava morta o tempo todo:
"People who haven't read the book may be surprised by the ending -- I certainly was. Was there ever any point in the process where you consider making any big changes to that ending?"
"Not really. It was kind of like a joke, almost. Because the book is so clear from the very beginning that she's dead, and the movie actually is pretty clear from the get-go that she's dead, too. Lauren's thing from the very beginning was, "The way to f**k up this movie is to make her live." That was so clear, and that was something that producer Jon Shestack and I talked about a lot. Like, the Hollywood ending of this movie, in the most clichéd sense, is like, And she opens her eyes at the end. And did we shoot that? Ab-so-lutely! With the intention of using it? Not at all. We were like, "Let's shoot it to have it and then try to not use it." Because that's not what the DNA of this project wants to be [or] what this movie is."
Fonte: link