But it's well known that torture doesn't get people to tell you the actual truth - in which case even if there is a nuclear bomb about to go off, what good does it do to torture the person? Wasn't it the case that there wasn't a single accurate piece of information that came out of the CIA torture regime?
And if you're in the same city as the bomb, whatever you can possibly do to them has a finite timespan and is therefore much more tolerable and resistable.