We know from the Apple-FBI debacle that intelligence stops at nothing to know our secrets. Criminals and terrorists already know how to protect themselves. Why cannot decent people have privacy? That’s what distinguishes us from totalitarian societies.
If you’re using an updated version of WhatsApp today you’re encrypted from one end to the other.
Open Whisper Systems: WhatsApp’s Signal Protocol integration is now complete
Arguing that you don’t care about the right to privacy because you have nothing to hide is no different than saying you don’t care about free speech because you have nothing to say
Wikipedia: Nothing to hide argument