Sensitive to servicing - yes, shifting performance will degrade through lack of serving, but it takes some mileage. However, once they have been allowed to get that far they need a specialist overhaul - I'm Cytec qualified and have an MSc in a field of physics, and there ain't no way I'd consider a full strip, though a basic oil-bath service is within the scope of many riders
Shifting performance gets better when they wear in, sevice once a year with changing the oil bath (I know of people riding their hub without doing this for over 4 years) and maybe chaning the shifting cables.
And yes, I've had one fail on me terminally, believed by the repairing agent because a 116kg powerlifter wad managing to put too much torque though it in the lower gears - the internals had simply churned into a metallic mush. They do recommend a max rear sprocket size to prevent torque damage, but being quite weighty and being able to squat over 3 times my own weight it seems I managed to exceed even the official safe limit. yes, working in an area of the trade as I do its not the only failure I've come across, although you'll never encounter many because only a tiny proportion of bikes have them.
When you "under gear" your Rohloff or can produce more power than 2 Chipolini's in full sprint together the plastic guiding washers will break as a back-up safety. I've never seen this happen though.
Indestructible and everlasting they are not. Probably tougher, within limits, than the typical derailleur, but when your mech goes south you'll be sorting it on your kitchen table, possible fire cost if only cleaner and lube - unless you're Adam Steltzner you ain't gonna be fixing a Rohloff in the kitchen, and if it's busted isn't gonna cone back with a strip and clean.
Agree, nothing mechanicly is indestructable, but the ods of a Rohloff failing on you is so small I would travel the world with it without spares.
PS, when will people stop quoting Sheldon? Nice albeit I'm sure, but reports are that his trousers went on one leg at a time each morning, same as everyone else's.
as you would have read it you would know it was written by Andy Blance not by SB