The reasons given are largely consequentialist. There are deeper philosophical reasons why privacy is important in this context. The essential reason it is important concerns the proper relationship between the individual and the state. Surveillance and intrusion violate the proper relationship and establish an improper relationship between the two. In other words, to justify the relation and thus intrusion, one hold concepts of state and individual that are anti-individualistic and place the state above the individual. The undesirable effects follow. To borrow Koneczny's terminology, a surveillance state is move away from Latin civilization perhaps towards Byzantine civilization.