Just a week ago a group of us were sitting around the campfire talking about this very subject. 2 of the couples have already given up the keys. One has heart problems the other cancer, both reached the point of being wore out after between 150 to 200 miles and then having to setup for the night. It just took the joy out of going so they hung up the keys and both have sold their rigs. They still stay in touch and sometimes meet some of the old gang camping. They stay at a motel and stop by the campgrounds. Some of the rest of use have various health problems including myself at 71. I can no longer sit for much over an hour, then have to stop and move around. So I also am near that 200 miles a day is enough. Some of the maintenance which I have always enjoyed doing is getting to be a chore. The toad is getting to be harder to hook up and unhook (the legs just don't like the up and down). 7 years of off and on chemo hasn't helped, last winter was the first one we haven't gone south in years. I had a bad fall of chemo. So as of now I/we have slowed down but not hung up the keys. I drive a little slower, don't feel I'm a danger to other drivers. I don't need glasses. So we just play it day by day and hope I have the good sense to give it up before I hurt someone some day.