If I Google lifespan of a motorhome it generally suggests 20 years on average. I know there's plenty will say they've had there's much longer, that's how average works . What really intriguing me is the amount of 20 year old and older vans that I'm seeing for sale that are over 20k and 4 and 5 year old vans that are on sale for more than they cost new. Is there going to suddenly become a time when their value will just fall off a cliff and there will be a lot of unhappy people around?