Don Norman's "Human-Centered Design Considered Harmful" gives us an interesting view in how the user might not always be right. There are in fact a lot of things to consider in interface and interaction design, not all of which concern the user. And rightly here the concerns are brought to the fore.
I think the most important takeaway point of Norman's article here is the simple fact that tasks do not necessarily mean valuable user activity. The users activities and desires are not necessarily fulfilled or quantified by the tasks at hand or that the system demands of the user on a regular basis. If there were anything to learn from this paper, it is just that—no task by itself justifies its existence on its own. There must be a reason to why we are doing and interacting as we do with systems and interfaces. There must be reason.
Don Norman does a good job to this effect.