[soheil]

The "nothing to hide" argument is flawed because it only looks at the past and not the future. It's basically saying the opportunity cost for not giving up my privacy is zero. It's to hedge against being wrongly accused of something or a myriad of other unforeseen events happening to you, none of which your fault (e.g., identity theft) that if you had privacy would be easier to avoid even if you're a perfectly law abiding citizen.

It's like believing put options in stock market should be worth $0 because you will never need to exercise them.