In her book "Moral Disorder and Other Stories," Margaret Atwood explores themes of life, death, and the passage between worlds. The quote "But all doors used regularly are doors to the afterlife" suggests that every experience or transition we face may lead to a significant change or a new state of being. This reflects the idea that life is cyclical, with every ending paving the way for new beginnings.

Atwood's narrative invites readers to consider how daily choices and relationships shape their realities and how each moment can act as a threshold to something deeper. The imagery of doors symbolizes transitions that are inherent in life, emphasizing the importance of acknowledging both the tangible and intangible journeys we undertake throughout our existence.