I agree that some of the possibilities of such tech are scary.
However, putting on my optimist hat, they are only possibilities. Of course it will be possible to do such things. The question then becomes: why would anyone do them, and (somewhat linked) what are the chances that anyone will do them to you?
> I tell your boss when you lie about being sick, I tell your insurance how often you do risky things when not driving, I tell your ex where she can find you at the club.
All of these things were possible 50 years ago. They are possible now. They will be possible in 50 years.
Increasingly advanced technology reduces the amount of effort, and to some extent, the prior knowledge about you required to do these things - but that doesn't automatically make them more likely to happen. For the vast majority of people the motivation to do such things remains extremely low relative to the motivation to do other more interesting things.
> I mean, I'd know everything about you -- where you lived, where you shopped, where you worked, where you ate out, where your friends lived, what you did with your friends, when you did it, etc.
Again, this is not far off being trivial with today's technology. Yet you can't imagine (at least I can't) what benefit or pleasure anybody would get out of knowing such information about a person today. Therefore it's extremely unlikely anyone will care enough to do it - evidenced by the fact that practically nobody does. Why will this change in the future?
Taken to the extreme, ask yourself even if you could retrieve this information about any given person instantly, for zero cost or effort, would you even care enough to do it? Are the things you could do with that information more exciting or interesting than what you were otherwise going to do today? For how many people is that answer going to be yes?