What happened to Pneumonia - the Old Man's Friend?

Alexander Fleming foresaw problems that anti-biotics might run into.  I wonder if he thought of this one?  When we lose sight, hearing, general health, mobility, and, above all, ability to control our bladder and bowels, some also lose the will to live.  Along comes pneumonia to finish us off.  But if we are in hospital along also comes a well-meaning young doctor and prescribes anti-biotics.  The pneumonia is cured, but not whatever took us there in the first place.  It would be kinder to let people die, suddenly, of their pneumonia than linger on suffering and dependant.   I have spent a lot of time in geriatric wards.  Because I am old myself I understand.  Because I am old myself old people tell me they know they can no longer go home, they don't want to go into an institution, they would rather fade away.  How long are we going to put up with this really cruel system?  By definition younger people find it hard to imagine how old people feel.  The rules are made by the comparatively young. It is ridiculous that the word "Death" is never mentioned.  At a certain point "Death" becomes our friend.  I know for sure because I have a daughter who died at 52 of cancer.  That is what she thought.