On faster descents, you can actually see the water spray out the sides and bottom of the links as it pushes it out of the way. Rain happens. I make a point not to let mud and sap build up on any piece of climbing gear, so I wouldn't know about that one. I have a modern, high-efficiency washer that doesn't use as much water, and it doesn't have the agitator coming up through the stainless tub. Easy to wash ropes in, don't have to put it in a pillow case or whatever. Big machine, 200' of 1/2" fits in there easily.
I'm not sure if the things I do constitute "babying" the equipment. I do whatever I think will make it last as long as possible, and perform like new for as long as possible. I have a huge respect for quality tools, since they pay for themselves over and over again when you take care of them. The best of them won't last long if you never clean them and treat them like crap every time you're in a pissy mood.
I have friends who clean their motorcycles with a toothbrush and have 97 chemicals to polish chrome, leather, you name it. Spend hours in their driveway or garage making the thing shine like new. Weekend warriors with ten year old motorcycles with only 1400 miles on them. Everything else they own looks like shit, and never gets a minute of attention other than the occasional kick and extremely profane rants about what a pile of crap their truck is, that's never had an oil change and gets driven down gravel roads at 85 MPH all year.
I buy motorcycles to ride them, not decorate the driveway, so they get some miles on them and regular maintenance. But they don't stay showroom shiny forever, and I have a lot of things I'd rather do than scrub them with a toothbrush and Farmer Fred's Shiny Ass Chrome Polish.
I think climbing gear is good equipment and deserves the regular maintenance and care I give my bikes, but I don't sit in the garage with Ivory dishsoap for six hours trying to get the bug shit out of the crevices and cracks.
Just sayin'.