I don't think you understand what privacy means to many of us. It has nothing to do with being "comfortable with who you are". I am comfortable with who I am, and I still value my privacy.
There are many reasons that people need privacy. Privacy is very closely related to freedom. There is a reason that our forefathers built privacy into to Bill of Rights (see the 4th and 5th amendments for example).
I accept that you have nothing to hide. I don't understand it. The most meaningful things in life to me are things that are only shared with close family and friends. Some things that I am proud of aren't things I want my employer to know, or people I might know casually.
It is fine for you if you have nothing to hide. It doesn't make you better than anyone else. Many of us feel the need for privacy.