Living on the other side of that table, and living in the rooms where docs sit and shoot the shit after such patient encounters,
and as someone with a debilitating chronic illness that people love to spout bullshit alternative medicine theories and treatments for, I'm going to go ahead and say your conclusion is both self-serving and wrong.
Self-serving because, naturally, the reason that your requests are met with poor regard isn't because there's something wrong with the request, but because something is wrong with the person receiving it. But that's okay; that's the nature of human opinion and subjectivity. You can accuse me of the same, of course - oh, and will. I'm sure this thread will go from Zero to Malpractice in 6.4 seconds.
But wrong:
You're going to ignore this sentence, but dear god, do I want to burn it into your eyeballs, and the eyeballs of every person reading this: I care. The vast majority of my colleagues care. The vast majority of nurses care. The vast majority of everyone you meet in the hospital cares. They've been there, either themselves, or with a loved one; have been there in the past, or are there now, whether or not they disclose that to you. They give a shit.
When we work with someone that is suffering and dying, we care. We hurt. And when, god help us, there's a chance we can actually help and reduce that suffering, be it for the patient or their family, and they take that away from us, we hate them a little. We hate them for making us care, and making us watch and experience and share this suffering when maybe we didn't have to.
When a patient says, "You know, it's really important to us that we explore (dubious option X)", it puts up our radar for "oh fuck, this is going to suck." And the more the patient goes down that road, the more we know they're going to veer away from care that's at least have some evidentiary basis to support it working, the more we know we have to go down the fucking drain with them.
Not that long ago we had a lady on our IM service who'd had a promptly diagnosed, treatable, resectable local cancer... 18 months ago. 18 months of quack bullshit later, she came in to us because of the severity of her constipation, because that cancer arose near her intestines, and had now matted and infiltrated them. She and her family were proof to all conversations regarding reality: she just needed IV nutrition of the appropriate sort, because the problem wasn't that the cancer had utterly invaded her GI tract, it was that she needed the right vitamins! Our nutritionist couldn't come up with the miracle combination of IV nutrition for her, because she kept deteriorating (of course she did.) The family wouldn't allow painkillers, because those worsen constipation, and of course, they refused to acknowledge this constipation was because of her rampant cancer they opted to leave untreated, not because of some magic nutritional deficiency. Which means no opiates - because any minute now we're going to cure that constipation with the magic vitamin.
So we had to listen to her scream, then moan, then quietly writhe. For days. While the family insisted we just find the right vitamin. Until the family insisted we try spoon-feeding her, because there just isn't the right IV feed for her. We refused. They fed her themselves. This lady who hasn't passed stool in two-odd weeks promptly vomited, aspirated, and within a few hours was in the ICU for a chemical pneumonitis.
We got to watch her die. We got to visit every-day. We got to try to gladhand the family and give them bland cliches because we didn't want them to hurt more. We didn't want to rub it in that they killed their mother.
But we got to watch it. In detail. I had the dismal, terrible pleasure of pronouncing her dead.
I'm not afraid of the terribly scary management of a vitamin C infusion in a terminal patient. I'm hurt. I'm pained. I suffer every time I have to watch preventable misery and death because a patient and/or their loved one's are busy chasing Google MD's endless font of nonsense. And because I'm not a goddamned robot, I dislike suffering, and those people that force me through more.
Surprisingly, doctors take a lot of solace in "we did what we could for her. We made it as painless as possible. We gave her as many days as we could." That means a lot. And when it's taken away from us, holy shit, do we hate it.
This was pretty stream-of-consciousness. I'm not editing it, and I'm not coming back to it, so if anyone bothers responding, know it's not for me.