Anyone make a mistake buying first MH ?

Bought a 2000 Tropical in July of 1999 after researching and test driving many, many units for over a year in preparation for retirement and going full time. Have full-timed in it from April 2000 until July 2007 (bought a place in Yuma). had 94,455 miles at that time. Since then have put on an additional 36,000 miles. Other than normal maintenance The only repairs I've had were; fantastic fan, rubber spring on tag axle, fuel line to generator, replaced (warranty) six Se-Gi windows because of seal, a new water heater (hole worn through it due to wear from a brace that was not installed properly), a new furnace and a (unnecessary) speed sensor. This coming Monday (13 July 2015 ) I am having the front air conditioner replaced (along with two new control boards and new thermostat - which really were not required but didn't find out until after I ordered them)(because blower motor has frozen). None of the repairs required emergency service or ever interrupted a trip. All I repaired myself except for speed sensor and windows and air conditioner work to be done on Monday. That is it. Everything else is original, including all hoses and serpentine belt and still working (chassis and house items). Took it back to dealer once after purchase for a couple of cosmetic items and to factory for windows. Am on the fourth set of tires (8 per set) and second set of brakes. Have crossed the country 3 times, Canada once, Alaska once, Newfoundland once and back and forth between California and Texas many times. I read on this forum many times from diesel folks not to test drive one or else!!!! Between 2004 - 2007 I test drove about every diesel there was up to about $300K (now would be about $500K). Most did not ride as well or drive as well as my current unit (exceptions were Country Coach and Foretravel). Admittedly the diesels were all quieter on any climbs, only marginally quieter on the flats and all had more power in the hills (some only marginally). On rough and ugly roads most were no better and many were worse than my current rig. The difference in cost between my rig and a comparable diesel at the time I purchased my unit was $40,000. Paid $82,000 in 1999 and it is probably worth about $15,000 now because of mileage. Things seen and experienced = PRICELESS.