An interesting article from International Business Times talks about the necessity of life insurance or not depending on your circumstances.
From the article:
Married, with Children In almost all cases, life insurance is a must for married couples that have children. Children are obviously the most dependent people, and a death can impact their well being tremendously. Even if the living spouse does have a job, their financial situation will still probably not be good enough to support themselves and the children. The income for the remaining spouse would have to be quite high to ensure a stable financial life. In most cases, it pays to be more cautious and just get the life insurance.
The article gives a good overview of different life situations and where life insurance applies.