While I admit my hackles were raised at the numbered descriptions you posted of ways a diagnosis might be desirable to a patient, I also admit seeing people I know in some of those, and perhaps myself in some. I think this phenomenon speaks A LOT to the present day idea of “mental illness” as a permanent, “just bad brain chemistry” state. That is how ingrained that belief – of a personal brain problem, not a result of life experiences, society, or physical bodily illness. In that mindset, then yes those would indeed be benefits of having a diagnosis – if “you’re depressed / anxious / bipolar etc” was seen as a inherent “disorder” of your brain, likely unescapable and the medications as a lifelong necessity and their wretched side effects as also necessary, then let’s make some lemonade from these crap lemons. I bought the brain chemistry malarkey for 11 years of Prozac, taken at a critical age – 16 to 27 – when what was actually wrong with me was undiagnosed physical disease (hugely worsened by the SSRI’s incidentally as well as the lack of treatment the false diagnosis allowed). Recently after in a large part the information on this site and the sources it linked me to, I know it was those incredibly overlooked (and now obvious to me – why did no doctor consider any of this?) diagnoses that I truly AM glad to receive because they mean quite the opposite. Treatable physical ailments, combined with working through lots of ACEs = not actually broken in the brain. From the perspective of HCPs, diagnosis is now necessary in order to bill for insurance as I understand it, and also as you note, to stay in business. Lots of food for thought here.