In my experience hydraulic rim brakes are perfectly fine on a 36".
If a spoke breaks the wheel becomes a bit untrue but brakes still work and you want to replace that spoke anyway.
Disks can be bent as well. Most of my disk brakes started squeaking at some point which always annoys me.
On the 36" a rim brake has a big leverage, and bites well enough. You need a large® disk to achieve that power on a disk brake. I have the stock (180 mm ?) disk on mine and would upgrade if I rode it more. Probably a better caliper would be stronger with the same disk, though.
I have ridden 36er with rim brakes a lot and never had any visible wear on the rim. Obviously there is going to be some but I don’t think you will have to change a rim in your lifetime because of that.
To me the main difference in performance is that you have to change brake pads more often on the disk brake.
I can’t really say about wet conditions as I have never really ridden a disk break when it was wet. With a rim brake you have to adjust speed and brake handling but that is a good idea anyway ;-).
I toured with Magura rim brakes on a 36" and all my brake problems were hose related → would have been the same with a hydraulic disk brake. Mechanical brakes would probably be more forgiving and quicker to repair, but I’d say less responsive than hydraulic ones (no experience on uni with mechanical brakes).
The only time a disk brake would have made things easier was when I broke so many spokes that I had to swapp to a 26" wheel for a few days and my brake pads were way above the tire. Then again on the small wheel I didn’t need them so badly 
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(Edit: mostly disc → disk)