The problem with 'I have nothing to hide' is that it creates a system where everybody has to abide. Everybody needs to be transparent. Everybody's data are exposed to a third party via network effect. It is not essential that Google, or government has my data. It has my friend's data, my techears, my psychologist, my president, my boss data, my wifes data. The third party might use it correctly, but then they can sell it to somebody, to a greedy corporation, to other branches of government. I see a very big potential for abuse.