I guess I'm just jaded because I've been through so many cycles of 'this will automate your security needs' followed by 'every system can be gamed' a couple of years later - much as Phil Zimmerman commented The natural flow of technology tends to move in the direction of making surveillance easier, and the ability of computers to track us doubles every eighteen months.
Nowadays I worry less about my privacy on the assumption that it's probably hopelessly compromised anyway, and more about being able to hold an unpopular position or opinion without official interference. For example I think it's far more important that gay people enjoy full civil rights, be able to marry etc. than they had better privacy tools that would allow them to remain in the closet indefinitely.