My sister-in-law finished her chemo about two months ago. Her latest MRI shows her to be tumor free. She is 78 and her greatest concern is not being able to care for her husband, who was, at least for a short time, suffering fainting spells. A recent family get-together was a very happy affair given the good news.
When a person is nearing 80, an extra year can look pretty good, depending on the presumed quality of life.