This continuous agitation by the courts in Brazil is tiresome, not only because the lawmakers clearly don't understand how encryption works, but because WhatsApp is deeply ingrained in the cultural life of Brazil. It is a service that can be used to chat with friends, but also to book a haircut, or make a hotel reservation.
Office culture is changing rapidly. Many companies now allow employees to use group messaging apps like iMessage or WhatsApp to talk to one another. It's a new and largely unregulated medium. The odds are that it's just a matter of time before careless employee chat habits leave companies open to cyber attack, costing them their jobs and possibly their bosses' jobs too.
Today's amazing technology means we can easily keep in touch with friends and family abroad and share our life experiences with our nearest and dearest, but it comes at a price. Our text conversations have jumped over to real life as we shun the use of please and thank you and speak in abbreviations.