And yesterday I completed the first part of my prototype "gaming couch" and made sure those of my kids who cared could see how I did it.
Or put another way, a skill or service being a vocation just means it's useful enough for enough people, so that society can support it functioning as a distinct job (or set of jobs). The more useful it is, the more demand there is for that job - but that also means the more useful it is to know the basics yourself. A random Joe or Jane doesn't really need to know how to x-ray stuff to find material defects, but they sure as hell will benefit from knowing how to wash their own clothes, fix their own faucets, balance their own books, ... and how to automate this and that in their use of computers.