Why was it that the main character of a novel was generally not a perfect person?

The protagonist of a novel is usually not a perfect person. This is because a good story usually has a challenge and conflict that requires the protagonist to face some difficulties and challenges in order to promote the development of the plot. If the protagonist was perfect, then the challenges and conflicts would be unattractive, and it would be difficult for the readers to resonate with the protagonist and emotionally invest in him. In addition, the protagonist of a novel usually needed to have some shortcomings and weaknesses to better express the protagonist's personality and humanity. These shortcomings and weaknesses could be physical defects, emotional entanglements, psychological difficulties, etc. These could make the protagonist more real and three-dimensional, making it easier for readers to resonate with the protagonist. Therefore, the protagonist of the novel was usually not perfect but an ordinary person with some shortcomings and weaknesses. This was the only way to better attract the attention and emotional input of the readers.