I found this movie amusing as a kid. Having said that, it is cringe to watch now. I'd file a lawsuit against this family if I were Mr. Wilson. Also, I dislike the fact that they make his mother a working mom and suggest that is why her kid is so horrible. They even go so far as to berate her at her work for "having a kid." So, the moral of the story is she would be a better mom if she didn't have a career, thus leading to a better behaved child. The dad is bad as well. Mr. Wilson confronts him in the beginning of the movie about his kids behavior and the dad practically defends his kids actions and blows off Mr. Wilson. Just horrible people all around and horrible moral lessons.
*On a side note, Christopher Lloyd nailed his role and was great.