RE: The "nothing to hide" argument, beyond the real personal ramifications one can reason out with even a cursory examination of the topic, is still an incredibly selfish argument. Mathematically it's entirely probable it won't be used against you. What about other people? Is it ok for power to be abused so long as it happens to someone else? Journalists critical of the people in power? Whistleblowers? Opposition members of government? Rival businesses of someone in power? evidence exists that this has already happened. There are things that happen outside ones sheltered, insular personal life that affect society as a whole.