This is well written 🙂. Privacy is about personal freedom to reveal oneself to whom he or she wishes to reveal too (examples include everything you mentioned).
Secrecy is, on the other hand, information that one does not want anyone to know.
Privacy is all about establishing personal sovereignty over our own information.
Secrecy is, in my opinion, a more corrupted form of privacy which if unchecked creates a breeding ground for less accountability and corruption. This has been mostly true in politics (both church and state) through out all of history. Historical examples include Borgia Pope (Alexander VI). What this guy and his son did for power (while looking good to the masses) was stuff of legends. The activities inspired Machiavelli to write the book called “The Prince” and a friar in Florence called Giralamo Savanorola to start preaching against the church, an act to which he was eventually burned at the stake by Pope Alexander VI. Fighting against secrecy is a very dangerous game.
Citation:
Warren, E. (1974). Governmental Secrecy: Corruption’s Ally. American Bar Association Journal, 60(5), 550–552. http://www.jstor.org/stable/25726734