Seeking wisdom from GLP members - is impending old age justification for suicide?

Just to clarify this is just a theoretical question.

I look at so many people as they get older struggling with health problems, divorce, apathy/boredom, physical degradation, and the fading of looks.

Just as an example, a man who has a near record for continuous days of running decides to break the streak at 62. I thought this guy must be in great shape and looking good to by running 5 miles a day for 25 years.

But what do I see but an old man, no offense intended, losing his hair. It's really sad and unless you have the support of a good woman and/or friends what is the point?