I really hate the Dad so much for not being sensitive to his son’s life. He is a stranger and yet he fosters a relationship that is not permitted. So, the child is scarred and hurt.
A fitting end would be for the Dad to get hit by a truck and get critically injured. In dying, he can donate his kidney. Then the son will have the kidney and his memories of the “nice” man. The family then can live on without the vermin.
So, Dad has had 3 wives(women) and been leaving his children behind.