On the other hand, it can also make people more accepting of mortality in some ways. If they believe in an afterlife of eternal darkness as a result of their actions, they might strive to live a good life. So, it can act as a moral compass. They may think that if they do good deeds, they can avoid this dark fate, and this way, it gives meaning to the idea of mortality and the choices we make during our lives. For example, in some religious teachings related to such afterlife concepts, people are encouraged to be virtuous to escape a bad afterlife. And in this case, the idea of eternal darkness in the afterlife helps them come to terms with the fact that life is limited and their actions have consequences even after death.
Eternal darkness in afterlife stories can also make mortality seem more mysterious. People already have a natural curiosity about what happens after death. When the afterlife is described as eternal darkness, it adds another layer of mystery. This can cause people to think more deeply about mortality and the nature of existence. It might even lead to different philosophical or religious speculations about the afterlife, life's purpose, and the relationship between the two. Some may see mortality as a transition into this mysterious and potentially dark realm, while others may search for alternative beliefs that offer a more positive view of the afterlife.