From all I’ve ever heard, it’s not uncommon for the relatives, not the medics, to insist that someone be kept going - regardless of quality of life, and when letting nature take its course might be kinder - because they ‘can’t bear to let mum go’.
When I was a regular on a dementia forum I heard of someone of over 90, with already at least moderate dementia, whose relatives chose for them to have a pacemaker, even though they’d been told that without it, the person would most likely drift away quite peacefully in their sleep.,
I wish I’d had the opportunity to decline any such thing for my poor mother, rather than witness her former, intensely private self descend into the indignities of double incontinence, never mind what else comes with advanced dementia.,
But although so frail-looking, she had the general constitution of a rhinoceros. After breaking a hip at 90 or 91, I was told that the anaesthetist at the op to fix it had said, ‘Boy, this is one tough old bird!’
So often a broken hip is the beginning of the end, but she went on to 97.