I honestly think it is due to them growing up and moms always side with their slut daughters regardless of the situation. A slut daughter could have sneaked in a few Chads and got gangbanged by the football team at 3am and then get caught. First thing she will do is start crying because #HerBodyHerRules and that you invaded HER privacy. The mother will look at all the Chads and lick her lips and try to join in (and most times they do if husband is still asleep). The underage daughter broke protocol and violated curfew and a whole bunch of other illegal things but mother always supports her little baby angel.
Meanwhile that is the age that fathers start realizing the truth about women. They look at their wife supporting this type of behavior and they realize the wife is a cum-guzzling whore. Then he realizes where his daughter got it from. He remembers all those nights when he was finger blasting little 14yo Wendy at some HS party and she sucked off multiple boys in quick succession then he looks at his "little girl" and can no longer see her as the innocent pure untouched girl she once was. Whenever he gazes upon her he just sees a Bukkake show because all females start fucking and sucking at 12. He has a mental breakdown. Realizing he worked and tried his hardest for the past 10+ years only for this to happen. So he leaves. Except his wife still supports her little gremlin and divorces the husband because he is bad for going against their slut ideology. And since she has a vagina between her legs the wife gets the house and the kids and the cars and half his pay check every month for the rest of her life.