That's like saying, in an ideal world we don't need encryption because no one lies, everyone is responsible with the data they are entrusted with, and no one ha

That's like saying, in an ideal world we don't need encryption because no one lies, everyone is responsible with the data they are entrusted with, and no one has any motives to look at data that doesn't belong to them. Ok, but we don't live in that world. So we have encryption, and people have to take what they hear with a grain of salt.