Family Finance

In college I took a Family Finance class where I had to read a book, dang I can't remember the name now, but it was a fun book. It was a fictional story with real financial advice that was easy to understand. I remember one chapter was about life insurance. The family members whose income supports the family should have 10x their annual salary I think. It also said that child insurance wasn't necessary, since they don't support the family. But my opinion is that you should have enough insurance on each family member to at least cover funeral costs. Any financial gurus out there have an opinion on this?