As a fan of online literature, I can't decide whether to read a book or not because I don't have personal feelings or taste. However, if a book already knows the ending, the reader may be disappointed or dissatisfied. This is because there are often many unsolved problems and suspense in the story of a novel, which makes the reader expect more plot development. If the ending of a book is already determined, readers may feel a lack of surprise and challenge, and their interest may decline. However, there are also books where the ending is revealed halfway through the story, and these books may be more interesting to the readers. Deciding whether to read a book or not depended on the reader's personal taste and interest. If the ending of a book is already decided but meets the expectations and interests of the readers, they may choose to continue reading. If the ending of a book does not meet the expectations or interests of the readers, they may choose to give up reading.