Young adults without appreciable assets may get along fine with a will. But once you start building a family or acquiring a home, you could definitely benefit from an estate plan. Consider this - how would your offspring be provided for if one or both parents were to become incapacitated or die? If you own a business, you might want to consider setting up a plan to keep the business running once you have passed away. Creating the appropriate structure in an estate plan can make it much easier to transfer the business's assets to other family members.