Ok how does having access to sucker puncher's phone help me here ? I will still die.

I think we're talking past each other here. I was pointing out an example of how there's no absolute guarantees that another human being won't mess up your life, not that you need to look at punchers' phones.

The problem: I am asked to give up privacy. What I am getting in return, I can get more cheapely.

I can avoid sucker punchers. No need to give up privacy. I can avoid going outside a walled garden. No need to give up privacy.

You seem to be saying that its fair trade. I disagree.