Gene Dorio, an old-school doctor who makes house calls in Santa Clarita, drives a 1990 Volvo with 362,000 miles on the clock and duct tape holding things together. His patients have a lot of miles on them, too. Dorio is a geriatric physician. "Medical technology allows us to live longer, but is it with the quality of life we want?" Dorio wrote after reading a column I wrote about my father's failing health. "The discussions are avoided and I believe physicians are responsible for this," Dorio went on. "For some, dementia sets in, but for those who remain cognizant of mind and body, life can dribble away. Who can say when enough is enough?"