The big problem is, in the heads of those that make the decisions to employ torture, or "Advanced Interrogation Techniques", as they like to call them, it all goes down like an episode of 24:
The bad guy is captured, he claims he knows nothing. Then he is being tortured, until he finally reveals that there is a plan to commit a terrorist attack in 30 minutes at a location that is roughly 30 minutes away from whoever is conducting the torture.