The problem with torture is that it is a big cause of false confessions. Under torture, you never know if the person saying 'I didn't do it' actually did it, and if the person who confessed 'I did it' was actually lying to escape the pain. When humans are under great discomfort and physical/psychological pain we are capable of everything to make it go away - Personally if I hadn't done anything to any of your daughters and you guys tortured me, I would probably just confess to make the pain go away, and get rid of you - I'm not a secret agent trained to resist torture and interrogation. If I was a judge, and I plan on being one, I won't hesitate on giving a harsh sentence to a guy who used torture as a personal method to achieve a certain objective, it's not your right to do so. And yes, police inspectors have intensive training when it comes to interrogation and they probably know better than you how to do it.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you
