It doesn't help when others influence by saying "just take ... for that." I can't begin to explain why others do so, except that people generally have good intentions and are empathetic?
TLDR: Americans often don't invest the time and resources to identify and eliminate behaviors/conditions that are the cause of their ailments, and instead cope with any "quick fix" drug/product/strategy that never eliminates the cause of symptoms and often introduces new issues.
Last two thoughts: Many in modern society are very averse to discomfort - understandably, but regardless of degree/origin - and many doctors are happy to feed into this behavior instead of educating the patient that pain is sometimes a part of the process.
Many in modern society lack (or do not have the energy for) self-awareness and/or critical thinking to examine root causes of ailments/symptoms, and instead trust that taking ... will help without understanding the actual mechanisms/effectiveness of the treatment.
However, the quality and quantity of medication ads in the US has truly amazed me when I visited. I wouldn't want to be a hypochondriac over the big pond, because the TV ads were so suggestive.
E.g. the box of aspirin from the supermarket may have 500 pills: https://www.walmart.com/ip/Equate-Pain-Relief-Aspirin-Coated...
Aspirin is dirt cheap in the U.S.
For instance I can buy antibiotics, or things like prozac at most any pharmacy. Pharmacies being a bit different than in the US. In many places prescriptions are not filled at pharmacies, but at the hospital itself. Pharmacies are often stores that sell only drugs, usually without prescription, as opposed to the US thing where you have a general goods store with a pharmacist filling prescriptions in the back.
And all the regular stuff acetaminophen/ibuprofen/etc are also of course available, though there is a difference that generally it is sold in blister packs rather than in the huge bottles of it you can buy in America.
That freaks me out. The doctor is supposed to tell me what to assume, not the other way around.
Also, I have seen too many stories of drug representative sellers with no background in medical sciences convincing doctors to prescribe a drug with many, more-or-less honest arguments.
I'm willing to bet most people have a more substantial relationship with the barista at their local Starbucks than whoever happens to be on duty when they need to go to the doctor.
I think this is pretty normal; many insurance plans in the US have the concept of a "primary physician" who you nominate as your go-to doc for general issues. (It's easy to change, though.)
I do have more of a relationship with some bartenders at my favorite bars, though; you're right about that.