I think we have to own up to a few things:
1. Torture does in fact work sometimes.
2. It can only work when someone actually has information to give.
3. People who have no information will just give you a pack of lies.
4. America has long been guilty of using torture despite all rosy suggestions to the contrary.
All that said, the use of violent coercion in interrogations compromises basic human principles of compassion and should not be allowed even if it can successfully elicit information. We have and can acquire pertinent information with more gentle measures.