It is widely known that the length of time humans are living is increasing.
This is due to scientific research in the fields of medicine and diet I would say.
For someone not to take an antibiotic is their choice of course, but if it might help you get better, then it's worth a try....especially when a doctor is on the ground, prescribing and seeing the results of a particular treatment every day.
As the husband of a theater nurse, and who worked in an ICU for 3 years I got to see for myself, and constantly hear from my wife about illnesses that go unchecked, or ignored and then escalate.
The news and shows like ACA would have it that there are loads of shonky docs out there (there are some less than expert ones for sure), but I woulds wager for the most part that they help folks live longer and healthier.
I reckon it would be very frustrating for a doc to recommend a treatment to a patient - who then ignores all their advice...
"MR. Jones; you need to lose weight and cut down your smoking or you are in a high risk of a heart attack or stroke"
"I will, Doc"
(Mr.Jones smokes 20 a day, is 45 years old and has smoked 20 a day since 13 years old, and is 175 mm and 100kg's)
And so on.
I saw lots of Mr. Jones in the ICU who ended up losing a leg due to lack of circulation in their foot - due to above lifestyle and failure to heed advice from the good Doc..
Improvements in Civil engineering in the area of sewerage / water supply had a fair bit to do with the the increase in life expectancy.
In terms of people ignoring advice , that's very common , almost par for the course in particular when getting people to make changes towards a more healthy life style . I've had several patients die as a result of not following though with referrals for things like positive bowel cancer screening tests etc.
Cliff