The reason that motor home builders only warranty their product for 2 years or 24,000 miles is that's about all the longer they can keep what they make together. The drawers start falling out, breaking apart or bottoms start falling out.
Take your living room, bedroom, and dining room furniture and start shaking it up at up to 65 mph and see how long it will last. Same with your water heater, furnace, water pump, sink, toilet, breaker box, and everything else that you have in your house. If you have trouble with your electrical things, is it a 12 volt or 120 volt problem and where should I start looking for it? Is it an invertor or convertor problem? Is it a generator or a shore power problem? Where did they run the wiring, is it in plastic, is it shielded or not?
Did the hot water heater not start because of no electric, or no propane? Same with the refrigerator, is it not working because of not having 12 volt power or is the generator not supplying enough power or did we break a breaker on the shore power.
Since the RV repair shops have a sign above the service desk that says their hourly rate is $100 an hour you want to try to make sure you have bought a RV from a company that knows how to make living quarters with as little to go wrong as possible. That they have used quality materials that are installed by craftsmen who do quality work.