There will always be monsters, and they will always find a way. That is why vigilance and law enforcement exist.
End-to-end encryption is important because the same thing applies; by creating a system to counter the pedophile, you open the door to other monstrosities through the abuse of that mechanism.
End-to-end encryption is not an inherent issue. Ineffective, untrustworthy, and overly violent/destructive law enforcement agencies, combined with victim disarmament are. End-to-end encryption does not render law enforcement ineffective. It merely means they have to resort to well established investigatory methods instead of getting a free pass in the form of being able to trivially access content that would have been secured in the first place.
You can argue that warrant-proofing is an undesirable characteristic, but at least in the U.S., I argue the 5th Amendment covers most cases where end-to-end encryption would normally apply.
The world was never open and unencrypted by default before the Net, there is no reason it should be now.
