Creating your last will and testament is not a one-and-done affair. Different events that occur in your life can make it necessary to change your will. If you fail to make changes when you need to, your heirs may lose out on assets that they otherwise would have received or a nasty court battle could break out among your family members.
Any major life event or even a small one may cause you to rethink how you want your estate plans to proceed. Kiplinger describes some instances when revising your will can be a good idea.