At the end of the day, when the police can't get into a room, they can break the door down. Same with guns. The police are okay with gun ownership because they have the right to gun citizens down. Not to judge, but that's the balance. Same with why we tortured. It counterbalances their vulnerability to secrets. If torture didn't work, Kiefer Sutherland would never have gotten anywhere. But if everyone were against to…
Of course there is an answer to unbreakable encryption, the same answer to in person conversations at a private location: bug the location where the communication takes place. You don't need a back door on communications if you are "looking over the shoulder" of someone as they type it in. If the person is a suspect, then they can get a warrant to plant a bug.
The fundamental underpinnings of any related correct and incorrect behavior is still emotional though. And that is also why loaded words such as "terrorism" get the ball rolling fast, regardless of which way that ball is rolling...