My wife and I are also in our 70's, and have been RV'ing for various periods since 2005. We started with a small 21' Class C after many years of travel trailer ownership during our working years. We loved the little C, but soon learned that it was a bit confining if we were stuck inside for several days of rain. From the C, we moved up to a 33' Class A with a floor plan we really liked. It didn't have any slides, but we were fine with that, and the separate bedroom even meant we had the space to be apart now and then, if we wanted to watch different TV shows, etc. By then we were spending 9-10 months of the year traveling in it. Since then, we've moved on to our current 34' Class A with a single 14' super slide, and would never willing go back to no slides. The advantages of a motorhome over a 5'ver for our style of travel with numerous short 1 or 2 day stays interrupted by 1 to 5 week stays at destination locations are that we can pull in to a new pull-thru site and do our basic setup, leveling, extending the slide, etc., without even stepping out the door. That's particularly important in bad weather. A quick run to plug in the power, and were good for the night if need be. If it's really bad out, we can even just remote start the generator for power until there's a break in the weather. We do 4-down tow a car behind us that either one of us can handle hooking up or unhooking, although it goes a bit quicker when we do it together of course. After watching the work that TT and 5'ver owners seem to go through to get set up even for an overnight, we've never regretted choosing a motorhome over a trailer. I can certainly appreciate that a trailer makes more sense for other folks though.