Yes it is a double edge sword. What is the point in living to 85-95, if you're so infirm that you can't go to the toilet yourself and have to have carers change your nappies? And you can't feed yourself, and can't shower yourself, and have to be fed and showered by carers?
It's OK if you're 80-85+ and you're in reasonable health and fairly mobile, but the reality is that most people will start to go downhill by their mid 70s. I have seen many a person I know be fine at 70, walking 3 miles a day, driving miles and miles on daytrips, and taking parts in hobby groups, and living their best life. Then by 75-78, they start to go downhill, and are starting to get dependent on others, some have had to give up driving, and they have to get someone to take them everywhere, and get their shopping, and do housework and chores for them.
By 80-82ish, they can barely do anything for themselves, many have dementia, and they are put into care homes because their family cannot cope with them. And they're just kept alive for YEARS, just existing. I'm sorry if I upset anyone with this, but I think it's so wrong. As I said, even 25-30 years ago, people would get ill/get some kind of disease in their mid 70s say, and would die within several years. These days, there seems to be this desperation to keep people alive for as long as possible, even if they have no quality of life. With 10, 15 years or more of them just languishing in care homes. Just sitting in a chair all day, and being bathed and fed by carers.
I may be wrong, but I think one of the reasons for this is that care homes make 1000s of pounds a month off each person they have there, and they don't want to lose that income. So many peoples inheritances are going on care home fees for people who would have died over a decade earlier, pre 21st century.