I've considered starting a tradition in my family wherein every year you put on a pack and head out, on foot, in the wilderness for one week. Every year, for the rest of your life.
If your family adopted this tradition, many problems would be solved. Many complications become greatly simplified. It's much more dignified than drug-assisted suicide and certainly more dignified than going through Alzheimer's.
In fact, I think it's more dignified than simply dying of old age.