Nope. Life is precious. I live with that axe over my head. Still got cancer in remission, but never know.Suffering proves life is still there. Unless all avenues of cure have been explored, it is selfish to snuff life out.
As for that press made phrase-"Dying with dignity" it hides the real thing lie of being scared of living in a nappy for the rest of your life.
As for your family they should be taking care of you, if dementia happens. It is their duty. Marriage is for better for worse. Why is not parents get the same respect?
Anyways, doctors have to deal with these decisions on a daily basis, so I think they know how it feels to try and weigh up so many factors.