I think the reason its so hard is when we ask something we are missing out huge bits of information about exactly what we want. Another human knows from experience and context what the person actually wants. When I say I want a webstore for selling keyboards A web dev already has a pretty good idea what I want because they know what a web store does and how it functions and they know how keyboards work so they will know to add search filters for things like switch types even though none of this information was in the original request.

Explaining exactly what we want and covering all of the edge cases is just as hard as using a regular programming language. Until we can have full back and conversation with computers that have a deep understanding of what people want from a program and can ask the user questions like "But what should happen when x happens?".