Some people avoid creating an estate plan because they think they have plenty of time before it will be needed. While this is a valid hope, there aren't any guarantees, so all adults should have an estate plan in place as soon as possible. Even though you might think that you can create the estate plan and then forget about it, this isn't the case.
You need to review your estate plan periodically to ensure that it still reflects your wishes. You also have to check it over when there are major events in your life.