Schopenhauer's relationship with his mother is not very good, and there is a big gap between them, especially after his father died. Although his mother is bohemian, she is a very talented writer. Moreover, Schopenhauer was withdrawn from childhood and didn't like contact with people. His philosophy is mainly pessimistic, so he has no hope for women. These may be the reasons why he despises women. For details, please refer to his On Women, which is very detailed.