All the above discussions regarding the negatives of keeping an RV "too long" assume one thing - that when looking for a replacement one can find a replacement that equals or beats what is being replaced, value-wise.
For example, from an absolute perspective ... sure I could buy a 2018 Coach House that does everything our 2005 Itasca does (except for the Coach House having smaller tanks), but I'd have to lay out 3X what I paid for the Itasca (maybe only 2.5X when adjusted for inflation). Does it make any kind of non-emotional economic sense for me to do that ... none at all.
There is one caveat however: For motorized RVs the chassis still has to be maintainable, parts-wise and service-wise as the years pass by. This is not so much of a concern with towable RVs.
