My friend and mentor, Paul Woodruff, just published a thoughtful and persuasive argument against torture at the blog for Oxford University Press. I hope that you will take a look at it. All human beings will eventually stumble into a position wherein they have the choice to hurt another human being. It takes courage and nobility to step back and avoid it.
The excuses for torture are tired, and grow increasingly inept. Sometimes it requires tremendous moral strength to be on the right side of history, but this is not one of those moments. Torture is wrong, and it is wrong for our country.