I am not known for quick insight, which is probably why I just noticed dreams are not a full sensory experience. Never in a dream have I experienced a smell that was not in my "real" room and only then when I was waking up. Nor have I ever had interesting tastes in a dream; in fact I don't ever remember eating in my dreams. After careful consideration, I believe my dreams have:

-plenty of visuals
-lots of emotions
-movements of all kinds (crawl, walk, swim, fly...)

Nor has sense of touch played in my dreams; I don't remember any sharp, soft, or rough sensations.

What I have had are some bizarre ideas. I remember one dream where I came up with the solution to all the problems in the world. When I awoke, I realized what complete nonsense the idea was. It was so good at the time....

So dreams, as real as they seem, are missing quite a bit not seen in real life.

Of course this still does not make the uncomfortable ones less difficult.