What is the worst thing parents can do to their children?

I think there is three main things that a parent can do. Number one, not believe their children but trust others. I think that is wrong depending on the situation because a kid can lie abut misbehaving but about being assaulted, I don't think that anyone has the right to lie about that. Number two, when they don't take care of their kids or give them love. A child needs love and care for the at least ten years. In my believe, some kids grow up different than others because they don't get that their first few years. Number three, abuse them. If a kid doesn't get love and care from them, abusing them will most likely make it worse.