"Why does a dad matter so much to a daughter, in particular? A dad is the one who teaches a daughter what a male is all about. It's the first man in her life--the first man she loves, the first male she tries to please, the first man who says no to her, the first man to discipline her. In effect, he sets her up for success or failure with the opposite sex. Not only that, but she takes cues from how Dad treats Mom as she grows up about what to expect as a woman who is in a relationship with a man. So Dad sets up his daughter's marriage relationship too."