I suppose it depends entirely on how you're wired as to which of the below-stated would be more unendurable for you. Which and why?

NO EXIT. Trapped in a room for eternity with the same people. No way out. Ever.

WAITING FOR GODOT. Waiting by the side of the road with others for someone who never arrives. Ever.

In both cases you're not alone. In both cases the others with you never leave. How long could you take that in real life?