If I don't belive in a problem, there is no problem?

No, there is a big difference between cookies which will be send back to one webpage and a hidden systematic data mining together with collected confidental private data and user profiles given to third parties. Last is what national secret agencies do = spying.

John is like a young cat. My teacher told me a story from her little cat when I was in school, her cat tried once to hide from my teacher by looking away. The cat thought, when I can not see someone they can't see me.