yes definatly mate, i think the scrub monkeys at asda,sainburys,tescos should be banned from touching peoples motors, i detailed my own car last week and went to asda and unfortunatly parked next to someone that had there car washed i mean scrubbed with a grit ladened sponge and they got the sh1tty water all over the side of my car and i went mental, they offered to wash it off, i wont repeat what i said but it wasnt anything nice put it that way. ive had to listen to people saying they do a good job

makes my blood boil seriously.
so the answer to your question is no people dont understand at all until they see a car thats had it done properly with care and attention to detail.