My mother is 61yo, my grandmother 89, and my father 76yo. There is one major benefit to living with them. When a person reaches their age, they have more frequent problems with their health. Backaches, sleeping problems, pain, etc.
Should I ever have some of these problems, there is no shortage of medicine. Painkillers, laxatives, constipation liquid, Pepto Bismal, Preparation H, and numerous other medicine.
It's like my own personal drug store. Except for their prescriptions. My mother takes Demerol, but would never give me any because of my past addiction.