I don't have family of my own and my circle of friends isn't massive. So it's perfectly conceivable if I live to a ripe old age I could end up essentially on my own. I like to think at that stage, when I feel life is no longer worth living, that I'd have the courage to 'pop a pill' and see myself off before further decline.
We can all reel off examples. I used to have an old boy live opposite me. He remained independent (drove, did his own shopping, kept a nice garden etc) until an illness hit him and only a few months later he was gone. Compare that to people who have a slow and often not very pleasant decline over years, slowly loosing their independence and often their dignity. What's the point of additional years if they don't have a semblance of quality life to them?
No need to thank me for posting something so cheery