I have an 86 FXRS that I bought new and have been riding all these years. At last count, I have just over 200,000 miles on it, 4 drive belts, 2 sets of brake rotors, 3 stators, and countless tires, batteries, and brake pads.
The motor was rebuilt, top and bottom, about 4 years ago, and a new oil pump was put in. It has never had a tranny problem, and other than a couple of clutch plates put in about 15 years ago, no clutch issues.
Wiring is getting a bit problematic, as some of the wires are brittle and occasionally break inside the insulation, which makes it hard to find where the problem is. I've done quite a bit of rewiring on an ad hoc basis.
A month ago, I retired the bike and bought an 03 RG. What a difference! Not so much in terms of better or worse, but just very different.
Not sure what to do with the FXRS.... I'd sell it, but the wife is "nostalgic" and thinks I should keep it. But the garage is very small and there's really no room for two bikes. Plus registration, insurance, etc. etc. We're still discussing it.
I gotta say, it's been a great bike. Been to Sturgis on it (from Los Angeles), as well as back and forth to work for 20 years. Rarely had a problem with it. But I'm really enjoying my "new" Geezer Glide!