When did AC become a necessity of living? It was non existent at one time and people lived comfortably. Why do they die from a lack of it now?
Well, the persons who are now 95 years old and completely dependent upon modern technology to stay alive would not have lived that long back then.
***Why do they die from a lack of it now?***
Actually quite a few people died of heat back then. It was just called apoplexy.
Just like lots of people back then died of heart attacks but it was called “Indigestion”.