Also
@grasmere @Scubaregs @wriggly @Zydi @timlaw and a few others:
This is a thread because there are those of us who do not have an option to wash the car personally by hand. I am one of those people. I live in a small, LEED-certified condo building in the downtown of a major city. Washing cars on the property is not allowed.
That said, I work somewhere for which I park in a parking garage that has a car detailer on the ground floor. I have them hand-wash my car every other Friday. They do a good, but not great, job -- I often need to touch it up with waterless wash & polish the following morning.
During times when I need to wash the car somewhere else, there is one place I drive 20 miles to one-way to have it done. It is a touchless conveyor wash with hand-wash as a (significantly more expensive) option. Two times out of three I run it through the conveyor; no major issues so far. (I've seen R8s, AMGs, GT500s and Aston Martins go through this wash. If those folks are using it, I can.) I have to touch this up after the fact as well, but not as drastically as the parking-garage place primarily because I do it immediately after I get the car back.
Is my car pristine? Nope. Would I prefer to hand-wash it myself every time? Of course. Do I 'sweat' not being able to do that? Nowhere near as much as I used to because it's a choice to live where I live and not be able to. I take reasonable measures to keep the finish in good shape, such as having it detailed/waxed/polished every 4-6 months or after a long road trip. But I bought my car to drive it, not keep it in showroom condition. YMMV.
Heck: On road trips I use
power sprayers to wash the car! Talk about a no-no! But often, in Podunk, U.S.A., that's all that's around, sooooo ... you gotta do what you gotta do.