This movie is quite depressing. The whole scenario around which the movie revolves, make you sympathize with the children.
Hard to watch but it's not too far fetched from reality. It's based on a true story and I've myself encountered negligent people like this. So, some people do have to live with such narcissistic people.
When we see things from someone else' perspective who's not as privileged as us, we start to realize this world is actually a cruel place to live in.