Ultimately, the reason privacy is so vital is it's the realm in which we can do all the things that are valuable as human beings. It's the place that uniquely enables us to explore limits, to test boundaries, to engage in novel and creative ways of thinking and being.
What made Guantanamo such a travesty - and what still makes it such - is that it is a system of indefinite detention whereby human beings are put in cages for years and years without ever being charged with a crime.
As for the claim that drone 'pilots' are not engaged in the extinguishing of human life via video games, the military's own term for its drone kills - 'bug splat,' which happens to be the name of a children's video game - and other evidence negates that.
Very few people use landline phones for much of anything. So when you talk about things like online chat and social media messages and emails, what you're really talking about is the full extent of human communication.
Many American pundits and foreign policy experts love to depict themselves as crusaders for human rights, but it almost always takes the form of condemning other governments, never their own.