Isn't asking about the "utility of privacy" like asking about the utility of having a self independent from others - a separate identity of one's own, subject only to one's own command, with complete authority to determine the occasion of its visibility? Is there anything justifiable about separating oneself from the company of others and becoming non-visible to them, at those times when one is out of their sight, away from their awareness of one's existence, of one's activities, of one's thoughts & manners? What do youall think you are, anyway? Special? .. Blanc