I think there's a gender bias missing here. I've known many beautiful women who only see their flaws. They really don't know how beautiful they are. In fact the

I think there's a gender bias missing here. I've known many beautiful women who only see their flaws. They really don't know how beautiful they are. In fact they see themselves as average or below. While I've known many average men who thought they were God's gift to women. Perhaps the confidence factor cited in another comment. Since most readers here are men, I suspect the sampling is biased.