Do parents betray their children?

birth mom abandoned me when I was 4, so yes

When one parent refuses to leave, and take the children with them, in order to escape the other partner, who is physically, emotionally, or sexually abusive, those children have been betrayed.

My parents never betrayed me and I could never betray my kids. My husband’s parents on the other hand ...

They taught me the biggest lesson in life I ever learned, never trust anyone completely

That would have required me to ever have any trust in them to begin with.

Yes..my mother.

No.

Some do, is why many kids are displaced

I expect if their was no law things would be a lot worse, in some countries the parents sell thier kids into slavery.

I have seen few such parents

Some parents are shitty

Yes.

Again, depends on the parents.