The part about your chiropractor saying sitting all day is the real problem sticks with me. He's right, and that's exactly why the desk thing gets confusing. A standing desk only helps if you actually change positions through the day. If you mostly leave it down, you bought a regular desk with extra steps and a motor. The folks who swear it fixed their back probably started moving more in general, standing for a while, sitting for a while, walking around. The desk didn't fix them, the habit did. Eight months in, try standing for 30 minutes every hour or two and see if that changes how you feel. If it doesn't, sell it and put the money toward whatever gets you out of the chair more often.