[jonballant]

As mentioned above, the main benefit could be for the family members. When my grandmother was diagnosed it took our family completely by surpise. She lived in another state and my elderly grandfather was the only one around to take care of her.

Eventually, she had to be moved to a nursing center where the health care costs are astronomical.

Of course no one wants to hear this news early, but in terms of preparations that can be made by family members, the earlier the knowledge the better.

When a family member is struck with an illness it does not just affect the individual, but rather the whole family.