Enjoy it until as long as you want. Even when it starts to 'nickel and dime' you a bit with a chassis or house repair from time to time is still less than a monthly payment on something newer or starting over with a new to you coach and a slew of new problems. Interior updates are not that difficult or costly. Recover the couch is a good winter project and pulling up the carpet and replacing with laminate always makes a bit of a tired coach come alive.
My daily driver is a 14 year old Honda that I also tow behind the coach. It's long past showroom fresh but it's paid for, insurance is next to nothing and it does what I want. Gets me from point A to B so why replace it?
