Donate and write off your valuable 'Gem' of a motorhome, and you should get a fairly good tax deduction, if you have enough income to make that worthwhile. . .
Or sell it on Craigslist.
Yes any older RV will require a lot of care, checking the roof seems, perhaps replace a worn out water pump, or something. Things like rear axle seals can go wrong with a new RV as well as one that has sat for a while. I had one go out while still under the 6 year extended warranty on my RV. I also had a weld break when it was only about a year old. Now that mine is close to 20 years old, I guess I will need to keep repairing things more often than before.
Fred.