Not all water damage is death, if caught in time. I wrestled with a leaky skylight for years, and have the ceiling stains to prove it. No, I didn't let it go, or camp in constant rain. Until I found Heng's roof seal that thing wouldn't hold water.
My rig's 12 now, and is still very usable, functional and smells good. I enjoy an occasional cigar, never inside, and am fussy about using fans when cooking. That's what really turns me off with older units - the smell.
I have thought about trading up, but when I think of all the work involved in removing all my electrical upgrades including 6 solar panels, I think maybe not.