There is a curious and very telling phrase in Japanese to describe the feeling of hatred that people can have for family. It is kinshin-zoo, or "close-relative abhorrence."
Often in the course of human affairs — whether in social, political, ethnic or literary contexts — descriptions of distant others are proffered in less than flattering terms. This hatred of "the other" can even lead to conflict, war and genocide.
But there is also that kinshin-zoo phenomenon of hatred for one's own. After all, we know them best, in all their multifaceted glory. We are our own harshest critics. This may be, all in all, a natural consequence of belonging.