I want encryption so I can perform online transactions safely. Or at least safe enough that the financial services I use online can ensure the movement of my money.
If I want encryption to communicate online then it all comes down to who you trust. Who do you trust? Certainly not any provider of encrypted messaging services, since we can't audit their code, can't guarantee there isn't a TLA (Three Letter Acronym) plant working there, can't guarantee it's not a TLA front, can't guarantee the service provider isn't subject to a NSL etc etc.
I'm not sure I'm convinced this is a human rights issue. How would we enforce the right? Rights that aren't enforceable aren't much use. Negative Rights[2] and all that.
The UN's 'The Universal Declaration of Human Rights'[1] is a nice document, but it's existence hasn't made those things real. Adding another article, or interpreting the right to encryption in to an existing article, does not, and can not, ensure that right.
What am I trying to say? Probably something like: if there are people who are inclined to, and have the power to, infringe your right to privacy, you're probably pretty screwed.
1. http://www.un.org/en/universal-declaration-human-rights/
2. https://en.wikipedia.org/wiki/Negative_and_positive_rights (... rights are ranked by degree of importance, and violations of lesser ones are accepted in the course of preventing violations of greater ones ...)