Used M 3s & 4s for thirty plus years, mostly with a 35 1.4. Went digital in '99 and worked my way up to a 5D II with the 16-35 II, a huge beast that felt wrong every time I picked it up. When the M9 came out, bit the bullet and started putting together lenses for it. Have concentrated on legacy lenses as I prefere the subtle contrast characteristics(and a fraction of the cost of new). Images in LR look very close to Kodachrome 25 by default and started dabbling in B&W again.
I just happen to prefere working with a rangefinder, and with the quality of the results will be happy with the camera for years to come. Have also gotten back in the habit of having it with me most of the time. Slung on a shoulder, you almost forget it's there. I've used large format, medium format, and a range of SLRs, as well as doing my own B&W processing(mostly 400 pushed to 800) and printing. Rangefinders are a good fit for me, and I still try and keep the craft of printing as part of the hobby. And no, I don't think everyone else should follow suite.
After almost 40 years of using Leica gear I'm still not a doctor...dangnabit.