Before you buy life insurance you should determine what type of coverage is best for you and your family. A few questions must be answered. Questions like: how many people depend on you? If you are a very wealth person, you may not need to buy life insurance, as your family will not need extra cash after you die.
But if this is not your case, you better plan to buy life insurance. It may not be very pleasurable to plan about after your or someone else’s death, but it is important. Right after the death of someone, the family will have expenses with funeral and everything else evolved. As the dependants will be too worried and emotionally weak, they may need a period in which they will not want to think about money.

You need to answer yourself all these questions before to determine how much life insurance you need to buy.
Here some links that can help you too.