The Sins of the Father are not an ancient curse. It is the human condition of repeating the same old negative patterns over and over for generation after generation.
For example, pervasive abuse on any level will stay intact as long as the abuse is seen as normal. Many times abuse is accepted as a way of life. As if there is no other way of living. Therefore, the cycles of abuse remain for a long time, until someone finally realizes this is enough.
Family systems are complicated. People are complicated. Humans are a product of habit and fear.
Except when whether in secret or out in the open someone reaches out for a better way of living. Eventually the cycle is broken.
All it takes is some courage, please try. You know in your gut what you need to move forward. Please try to have the courage to break the cycle of abuse.