Always recall the wisdom of H. L. Mencken when dealing with the invisible friend nonsense, Jonesy, (and 'hello', btw)
Having this special (but invisible) friend makes them feel special.
Quote:God is the immemorial refuge of the incompetent, the helpless, the miserable. They find not only sanctuary in His arms, but also a kind of superiority, soothing to their macerated egos: He will set them above their betters.
-- H L Mencken
Having this special (but invisible) friend makes them feel special.