To deliberately inflict suffering upon someone for no other reason than to cause them to suffer is the most despicable and evil thing a human being can do. There is no excuse for it, and no cause can justify it. It is purely evil. It has never been a reliable way of extracting information, and it has always been counterproductive.
If you are no better than the inquisitors of earlier centuries who tortured their victims until they got the “confessions” and “information” they wanted, then by all means, give up the right to call yourself a human being and call yourself a personification of evil, because you have become the devil.