I think we're seeing that our "opponents" in this "war" don't mind going down with the ship. Numerous bombs have gone off killing the builders and yet they continue. Their comrades rode the planes into the world trade center, the Pentagon, and who knows what the other target(s) was or were. They are young, old, male, female carrying these bombs strapped to their bodies and blowing themselves up. They aren't afraid of torture and dying. They know it makes them Martyrs to the cause and guarantees them a place in heaven with 72 virgins.

Without stone cold in your face evidence that they are indeed terrorists and might actually know something (see previous about compartmentalization) the odds are that the even the "judiscious use" of torture and improper treatment would increase recruiting for Al Quaida and possibly increase the use of suicide bombing.

The chance that even this limited use would deliver any useful information has got to be incredibly low when most people on earth will tell you anything, factual or not, just to get you to stop!