In a completely false conscious mindset, viewing anything (forced marriages, enforced religious attendances, narcissistic parenting, child molestation, severe beatings) as child abuse will teach people to hate their parents. In Franco's Spain, domestic abuse was never recognized, and anyone that recognized domestic abuse was considered "crazy," "lacking faith and/or hope," "mentally ill or unstable," or "was taught by 'Jews' to hate their families."
I personally think child abuse is bad for several reasons:
I. It Decays Health - People who suffer child abuse are more likely to have health problems. Problems such as heart problems due to chronic anxiety, anxiety issues, depression, paranoia, eating disorders, or even schizophrenia. People who were abused as children tend to have aged hearts due to chronic stress, anxiety, and/or fear, they tend to be on antidepressants more from mental conditions such as depression caused by childhood traumas, or victims of child abuse are also more likely to be disabled caused by various health factors that have some or many roots from their child abuse.
II. It Increases Crime - Victims of child abuse are more likely to engage in crime. They are more likely to be violent, beat innocent people, and abuse others they have social power over, such as people who want to be friends with them. People who abuse their children themselves are more likely to commit crime.
III. It Wastes Energy - Children who are abused are more worried about their safety, rather than other things, such as learning in school, so that their brains can have more exercise and develop more. Victims of child abuse have lower brain growth because they had to put more of their energy into dealing or coping with the domestic abuse. Also, instead of abusing a child, why not use that energy to work? That will help the survival of humanity.
IV. Victims Of Child Abuse Are More Likely To Abuse Their Children - Some victims of child abuse, especially people who come from societies that are more religious, conservative, socially collective, or are oppressive by socialist terms, don't view child abuse as child abuse. They think that is normal! This is because they are lacking real consciousness in a way. If one was abused, and if almost everyone around them was abused ("and those who were not abused are labeled evil or wicked") then what is abuse? So many children take from their parents for various reasons, one being for economic reasons (before wage capitalism where many enterprises were family based), another for eugenic reasons, and another for cultural beliefs that are passed down.
If that were the case, when if abuse is so common that it by social norms would not be considered abuse, then where is the scientific proof that it is abuse?
My first reason, that "it decays health" is the scientific proof. When one's health is deteriorated due to child hood traumas and experiences, then child abuse is not the most efficient.
This is similar to why is happiness good? It is not because it "Feels" good, similar to how child abuse "Feels" bad. It is because people with higher happiness rates work harder, become smarter, have more energy available to contribute to the survival of humanity, and have more personal confidence to want to help society out.
Our feelings help us determine what is the most ensuring for our survival. Why is it bad for one to be stabbed? It is not because it "Feels" bad. It is because we would get wounds and lose blood and have our lives' threatened when we are stabbed. It is just that the feeling of being stabbed alerts us that having that happen to us will not ensure the best survival of us.