And when the guy you're torturing admitted to the assassination of Lincoln, would it give you pause?
We are in danger from each other, all the time. Do we torture fellow citizens because they might know something? No. Well, mostly no.
I think it's done for fun, myself. It certainly isn't done to get reliable information.
Surely we can provide other entertainment for people who like to inflict pain than this. Let's give them a few pets.