[bcaulf]

the reason your house is insecure is because we can't protect it with math

Exactly! If physical security were like crypto, we could all afford to have the security of a head of state. People who want high security rely on effective specific countermeasures, not just law enforcement generally. Law enforcement helps your security but it is not the whole answer.

Strong crypto is an amazing thing, allowing anyone to achieve privacy that cannot be broken by eavesdropping. That is true today the same as it was before the latest NSA news broke. With such a tool available, it is crazy not to use it. The cost and difficulty are small and the protection is robust against any eavesdropper, not just the US gov't.