I don't really have anything to hide TBH but I like to know how to protect my self at least on a Basic Level.
You can go threw all the Security and jump threw as many hoops as you want but when you make that connection online and are activity engaging in online activity their will be traces left or footprints for one to a better word.
The whole concept IMHO of hiding your self with online activity is against the foundations of technology and or technology's. My belief is that in our world we have in the consumer market and as the such the Internet being layered technology's you cant get away from cracks or vulnerability in the system. I.E.: The Internet.