It's not about revenge, its about obtaining information in order to save lives. And sleep deprivation is not torture if it saves lives.
What part of 'love your enemies' reads 'waterboard your enemies, deprive your enemies of sleep, beat your enemies, cause your enemies to die of hypothermia, rape your enemies wives and then slit their throats'? I can't think of anything more antithetical to Jesus of Nazareth's teachings.
I'm not even Christian and I find your comments utterly disgusting, vile and indefensible. Would you like to be kept awake for over 200 hours by repetitive loud, thrash-metal, or strobe lights, or cold water shock? Would you like to be force-fed through your anus without medical necessity? Would you like to be thrown on the ground, hands tied behind your back, cloth over your face then made to feel like you are drowning?
Many of these people weren't even convicted of crimes. They didn't have a trial. No hearing. No rights. No anything. Some weren't even valid terror suspects. Seems some of you Americans think you can just lift a man from the ground, accuse him of fairytales, then throw him in a dungeon to be tortured or die, and still call yourselves the World's Big Brother, or worse, 'Christian nation'.
Jesus, I imagine, would be sick at the connotation.