For men, women's physical loyalty is above all else, and it is often more important than spiritual loyalty. One explanation is that this is a mental illness left over from ancient times in order to ensure the purity of human blood. For many women, a lasting relationship and a stable marriage are above everything else. In their view, spiritual honesty is more important than physical honesty. One explanation is that a woman can have a limited number of children in her life, and whose children and her own children can be well taken care of, the latter is more important than the former.