To play devil's advocate: Mr. Cook expressed concern that "the government could intercept your messages, access your health records or financial data, track yo

To play devil's advocate: Mr. Cook expressed concern that "the government could intercept your messages, access your health records or financial data, track your location, or even access your phone's microphone or camera without your knowledge". As I read this I wondered, "what harm would actually happen if that occurred"? If the government did read my messages and get my health records & financial data and track my whereabouts, I can't think of anything bad that would actually happen as a result of that. Is there anything specific that I should be worried about in that scenario?