At one point in history, knowing how to use a typewriter was itself a marketable skill, because few actually had access to one and knew how to use it. These days, most people in the developed world know how to type, but still only a small portion know how to <i>write programs</i>. Saying that this is worthless is silly at best; someone is willing to pay someone else to turn their ideas into code, so it must be worth <i>something</i>.