Errm, you are aware that people got these infections, and died in droves from them, long, long before the age of antibiotics, or "germs exist", let alone are "bad"?
Who is claiming that microorganism-involved disease was nonexistent before the "war on germs"? My claim is that in light of what is now known about the human microbiome and its role in immune function, many common practices for "fighting germs" can be predicted to have harmful effects, particularly in the long run.
Do you think these practices are that effective? One of scythe's points is that the ESKAPE bacteria are ubiquitous, in people and the environment.
Sure, taking an antibiotic deranges your microbiome, but doesn't it seem to most of the time readjust?
My specific point is exactly what observed phenomena are you claiming this explains? Until you have that, or a solid, specific hypothesis leading to bad specific things, I suspect the rest of us will continue to use antibiotics when we get otherwise likely lethal infections. I brought up "microorganism-involved disease" because I'm not aware of any significant changes in how they work, play out in the human population, etc., besides the obvious.
Certainly, if you have an "otherwise likely lethal infection," take the antibiotics. If they screw up your immune response down the road, it's still better than dying now. I need to be clear that I'm not talking about this specific case but the general practice of fighting what are believed to be "bad germs" using techniques that can be expected to screw up the human microbiome and, as a result, weaken the body's immune function, making it more susceptible to exploitation by opportunistic pathogens.
As scythe wrote,
> That is to say: the six bacterial strains ... carrying the most severe antibiotic resistance and responsible for the worst infections are the very same strains present all around us naturally. However, in every case except S aureus, infection is basically unheard of when an individual has a functioning immune system; they are all opportunistic pathogens. [Emphasis mine]
Right now, the emphasis in medical practice is on attacking the "bad germs." What is mostly ignored is cultivating robust immune function, which as scythe points out would mostly prevent opportunistic pathogens from doing harm in the first place. That's probably because until recently nobody knew much about improving immune function. But now, with a better understanding of the human microbiome, it's becoming hard to ignore that the techniques used to fight the bad germs (e.g., broad-spectrum antibiotics) are probably also having harmful effects on the human microbiome and, as a consequence, immune function. So the short-term fix is likely to also cause long-term problems.
To give you an example of what I'm concerned about, let me share what happened to my wife a few months ago. She had a rash on her lower leg, near her ankle, and went to see her general practitioner. Her GP didn't know what the rash was but nevertheless prescribed an anti-itch cream and -- surprise! -- a course of antibiotics, "just in case." (It turned out that the rash was mild poison ivy, so the antibiotics would have done nothing to help.) For many practicing doctors, broad-spectrum antibiotics are used like this as a general prophylactic for all manner of minor ailments. Lots of people are having their microbiomes decimated for very little benefit.
> Sure, taking an antibiotic deranges your microbiome, but doesn't it seem to most of the time readjust?
By what mechanism would eliminated strains be repopulated? And if they weren't repopulated and if your microbiome didn't "readjust," how could you tell? After all, even if such derangements were permanent, we would not expect to observe them until they were challenged by opportunistic pathogens and exploited. It could be, therefore, that such derangements have an invisible cumulative effect: the more screwed up your microbiome becomes the more at risk you are, but unaware of it until you get sick.
This is a grander version of the hygiene hypothesis (https://en.wikipedia.org/wiki/Hygiene_hypothesis), but unlike it I don't see a phenomena to explain.