Agreed. I think most of us tell clients this when it comes up. But still, some clients view that response as a way to weasel out of "building a good site." Clients don't always understand the distinctions in roles. Some of them see "making a website" as a monolithic task. To them, adding a blue background to a page and moving that page up in the SERPs are equally difficult--for both, you just have to know how to code.