Admittedly and first of all I want to let you know as a matter of fact that I recognize you as one of those very few here in HP who ask very sensible questions and that is why I love answering them (though, regretfully, I was unable to see all of those questions because I got busy doing something else in the net).
For this question of yours, here's my take;
I am 58 just last January this year, of course, and among my pride and joy in life is that I have not heard anyone say (to me at least) that I look my age or older than my age; this would mean that despite all the pains, the accidents, the hospital experiences like surgery, I am still as healthy and fit as a horse; no lingering illness can get through me longer than I allow it. See what I mean?
I count my blessings and only focus on them so that even if I recognize the shady and cloudy parts of my life through all these more than a half century life that this universe had been allowing me as a guest here, I am still not ready to "check out". I stay here in my own terms and I know that by nature I possess many extra or bonus tickets to qualify me to stay longer.
These "bonus tickets" are my very beautiful children and grandchildren; they are not only my pride and joy but most important is they are the evidence of my personal success as a mother; and I am only talking about successful motherhood, the rest is a long story of success to talk about...my remaining lifetime won't be enough time to talk about them therefore I can say to Mr. Distress "Sorry Sir, I know that you also have the right to exist in this life but I have no more time left to even talk about you."