How to explain to others why privacy matters?

1) Within the next decade millions of people will own Google and Apple glasses.

2) If you have a face, strangers will be able to instantly identify you with their glasses.

3) Private information leaks more and more frequently to the public.

4) How much information do you want millions of strangers who encounter you to know about you?

That is a good question because it comes up a lot and people start explaining ideologies rather than showing real world examples. I believe John Oliver provided the best example when he interviewed Edward Snowden. John walked around town asking people how they felt about the government monitoring their phone communications, text messages, etc... People were mostly indifferent until he rephrased the question asking if it was alright if someone was monitoring the pictures and videos (sexting) between they and their spouse/partner. When that topic came up, the nearly unanimous answer is that they would be furious if someone was watching their sexting content. [1] So in summary, I believe the answer is to find something that people actually wish to keep private when discussing it.

[1] - https://youtu.be/XEVlyP4_11M?t=1443

Apple thinks it's a "fundamental human right" (see WWDC). Now we need to get Facebook and Google on board...

Well, how do you explain it to yourself?