or do I need to get with the program, act like a professional photographer, and start shooting RAW?
I used to shoot only jpg fine, thinking it was good enough if I was careful in my shooting, etc. About a year and a half ago, I read Bruce Fraser's book - Real World Camera RAW (CS2) and now shoot RAW exclusively. I too use the D200 (and D1x... and D70) and shooting RAW was like upgrading my camera. I go back to my old jpgs and bang my head wishing I had shot it in RAW (especially now that I'm using a colour managed workflow). Once you get the hang of it (reading Bruce's book was my turning point) you'll never go back. Heck.. I even shoot RAW for my pesonal family photos, candids, everything!
The other advantage that isn't apparent, is that as RAW processors advance and get better (which they are), you'll be able to go back and re-process these older files even better.