Great to hear about your journey. My wife and I rolled up in Buenos Aires several years back without much of a plan and ended up travelling the length of the Andes twice-over in a Mazda pick-up and conceiving our daughter en route over 16 months or so. Agree totally re your comments about discomfort. We camped much of the way. From my comfy office seat that now seems astonishing but its amazing how fast whatever we do becomes the new normal. Relish every second of it. We quite enjoyed reading 'The Old Patagonian Express' by Paul Theroux on the way down...mostly because he was such a reluctant traveller and spent much of the journey cursing himself for starting the journey and being too obsessive to stop! Very funny.