Many people have strong views on the type of care they want or don't want to receive if get very sick. You can preserve your decisions with a living will which informs medical professionals of your wishes in the event that you cannot express them yourself.
In the days following a person's death, family members and loved ones can be suffering with immense grief and sadness. During such a difficult time, any task that creates contention or confusion can make the situation that much more upsetting.
If you are buying a home, chances are you do a lot of research into the homes you look at. You likely have at least one inspection, take multiple tours, talk to neighbors and research everything from taxes to school ratings. One thing you might not think about is whether ownership of the property is in question.