If you mention "Jet Black" over on Autopia, people start running for cover. So nice when finished perfectly, so much of a bother in everyday life.
Yes, washing and drying can install marring. Be careful!
Detailer's Domain is a good resource, as is Autopia.
And, it comes down to time. There are lots of people who don't have the time. A while back, I didn't. Now, I just pull the car out of the garage, get the necessary supplies out, get the satellite radio going on the back porch, and go for it until my old-codger body says "time-out."
For many people, access to a good detailer is golden.