While extremely rare in tribal societies, privacy may, in fact, be instinctive. Evidence from tribal societies suggests that humans prefer to make love in solitude (In 9 of 12 societies where homes have separate bedrooms for parents, people prefer to have sex indoors. In those cultures without homes with separate rooms, sex is more often preferred outdoors).
There was no classical or medieval latin word equivalent to ‘privacy’. privatio meant ‘a taking away’” ~ Georges Duby, author, ‘A History Of Private Life: Revelations of the Medieval World’
Individual beds are a modern invention. As one of the most expensive items in the home, a single large bed became a place for social gatherings, where guests were invited to sleep with the entire family and some servants.
Indeed, for most of the 19th century, privacy was practically upheld as a way of maintaining a man’s ownership over his wife’s public and private life — including physical abuse.