Sure, it is actually quite easy to design systems that allow only the state or the government (or any given trusted organizayion for that matter) to decrypt se

Sure, it is actually quite easy to design systems that allow only the state or the government (or any given trusted organizayion for that matter) to decrypt secure communications. However, the problem is, can we trust the governments to not use this for malicious purposes, or to not somehow leak their credentials to others? What if some bad actor infiltrates the government and gets all access, or some rogue terrorist organization invades a country? As the Latin poet Juvenal said, "Quis custodiet ipsos custodes?" (Who will guard the guards?)