To find ways to shield illegal behavior before technology allows police to stop every crime.
Otherwise, how can morality ever change?
All things that were illegal once (alcohol, blasphemy, borrowing money at interest) would still be illegal now.
But what shield against the infinite, all-probing eye?
The only thing that gives me hope is that human nature is immutable, and laws will be re-formed to adjust to whatever is truly inherent anyway.