I had started to regret selling it a month or so into my travels, but I've now figured out how to avoid trouble with the new lifestyle. Moving regularly between all of the several sitting locations I have in the RV (dinette, desk, sofa, and also sitting outside in a cloth folding chair or a wooden folding chair when weather is nice (which is most of the time, since I follow good weather), and exercising a lot more (easy since I have to walk my dog regularly, anyway, and I'm always in some place new that is way more interesting than what's on TV). I also still have my tall table from Ikea that I used for a while as a standing desk, but I haven't parked anywhere long enough to make it worth setting up.
As I type, I'm sitting outside under the awning overlooking the desert in a place called "Slab City" about 150 miles west of San Diego, and just south of Joshua Tree. I think I am going to do some customization of my next RV to get an Aeron back into the picture, though. There's just no good reason not to have a really good chair.