You can have it whenever you like, but such a decision cannot be made retroactively. If we as a society decide that we want to make that tradeoff, then we can

You can have it whenever you like, but such a decision cannot be made retroactively. If we as a society decide that we want to make that tradeoff, then we can only make it going forward. Those who do not consent to such an invasion of privacy must be given fair warning. For the majority to retroactively strip privacy would be tyrannical. I should not have to explain why.