In your example, law enforcement can force itself into the conversation in multiple ways (without compromising your counterpart), including listening devices or

In your example, law enforcement can force itself into the conversation in multiple ways (without compromising your counterpart), including listening devices or a break-in. Most real-life analogies to encryption are not good enough. A smart layperson can easily spot issues with the “if crime happens in private, you shouldn't ban privacy” type of argument.