I would say that this film gives an insight to the trauma that a young mind can face when a family is split by divorce or other disaster. I would highly recommend this film especially to parents or individuals planning to have a family.
I found the characters to be appealing and highly sympathetic from a multitude of dimensions.
The scary monster although probably not scary to most adults, has a very real hint of what the overactive imagination of a child who is facing unknown terrors might create.
I found the film to be delightful!