Words come and words go. Times change, language evolves.

Here's a prediction: Two words that will be incomprehensible a generation from now are "secret" and "private."

They will wither like "ether," "phlogiston," "the celestial music of the spheres" and so on, and for the same reason. They will no longer describe anything in our world. For better and/or worse, human beings are outgrowing their privacy and secrecy.