I note we are in "Science and Technology". Have you got any scientific evidence that this "user" exists?
If you don't, we should probably move this thread to one of the Religion and Ethics topics.
The "user" in this analogy is whatever comprises conscious awareness.
The output or functionality of any computer activity has no meaning or purpose outside the conscious awareness of the user.
I believe the subject of this thread is a contemplation of the nature and origin consciousness and how it can relate with current knowledge of science and technology.
To date, we have no valid evidence that consciousness can be defined within our current knowledge of science.
All examples of emergent properties arising from complex interactions of material elements comprise functions or patterns that can be perceived and verified to be generated purely from material reactions. Such verification does not exist with consciousness because we do not know what comprises consciousness. All we have is some form of correlation with neurological brain activity, but this alone does not explain what consciousness is or how consciousness works.