first of all, as a patient myself with discogenic lower back from annular tear, I can tell you this, discogenic LBP from annular tear, if it's symptomatic, it's not SELF-RELIEVING (did I tell you I bought decompression table to be used on myself?)
with respect to your point about searching the "fix", what we can do a as physician is to try to manage their expectation and provide the best to our knowledge and skill within ethical, moral and legal boundary. At the end of day, patients will make up their decision. Hopefully, they will gain good insight to their problem, and trust what you are telling them about risk, benefit, alternative of surgical procedures. You do the best of you can, but you shouldn't hold back something potentially could work, simply because the patient has no insight or unreasonable expectation. It's our job to educate these patients and empower them with insight and manage their expectation.
On the other hand, if I see someone who has poor insight and unreasonable expectation, despite of my thorough discussion, I would hold off doing injections.
I tell my patients I don't offer an injection to a patient until 1) he/she are comfortable with me (I meant, literally, do you feel comfortable for me to stick 6 needles into your spine?), and 2) until I feel comfortable with the patient that I feel they understand their condition and have reasonable expectation.