.... We're not keeping the RV in good shape for resale, we're keeping it ... in shape for us.
...
This is spot on, so true! Especially with an RV, one can never expect good "resale". If looking for good "resale", as other suggested in the above posts, invest in something else.
With an RV, it's kept in tip-top shape for the person using it. It's kept in tip-top shape so there are no unforseen breakdown while traveling 2000 miles from home, on a mountain road, in the middle of no where. It's kept in tip-top shape so your expenses are manageable. You control the maintenance on them, when, how, and how does the work, opposed to failures on the road and you have no other choice. The care you put into your RV is for your benefit, not the next person.
Use it, customize it for your purposes. Rebuild it! Do anything you want with it if it makes YOUR experience more enjoyable and more pleasurable FOR YOU. It's not about the "next owner." It's about your lifestyle.
Once your camper has served it's usefulness, fulfilled it's purpose for existence (for you), satisfied all your expectations (both good and bad), then it's time to move it on! Sell it for whatever you can get out of it. It's served it's purpose for you, and served you well. You got your money's worth out of it already!
So, the bottom line is, if you paid $60,000 for your camper new, you'll want to use it to make that entire $60,000 worth it.... if you never get another penny out of it.
The camper is for YOUR pleasure, not the next guy!