I think young people don't want to relate to their parents. They want to think they are their own person, and that is important. But when you are not young anymore, is when most of your parents trade will become more evident. Your parents are full grown adults while you might be a young adult with not much experience on real life, so most of the decisions that you made, the way you treat people and the way you work yourself through life, have not been as evident. School sometimes simulate those environments but many more times, the rules are way different than in the real world, so judging your decisions become less evident and you tend to rely on what you know, and what you know, for the most part is your parents. Specially because is the only example of seen adults facing everyday life from the privacy of the home.

Also fathers as men, know what to do with boys, while mothers do with daughters. That's their main responsibility, is very hard for children from one parent household to be taught by a woman, and sometimes making broken adults. This is a very common issue and one that have been addressed online by many sociologists.