Don’t confuse privacy with secrecy. I know what you do in the bathroom, but you still close the door. That’s because you want privacy, not secrecy.
A company like Facebook or Google allows you to upload unlimited data to their servers, for free. What’s their business model? How do they make so much money? They sell your info to advertising companies. But they never asked you if you wanted to sell your information. If someone asked you in person 100 questions about your personal life to sell it, would you answer them? Probably not, right? But you let this happen every time you use a service that makes money selling your info. more> https://goo.gl/mstSm5