In his book, The Three Stigmata of Palmer Eldritch, Dick envisioned a world where isolated colonists took a drug in order to inhabit the bodies of a hip yuppie couple. The colonists could have sex, go to the beach and tool around in a flashy sports car — enjoying things they couldn't do in their desolate surroundings.
Today, we have online, multi-user games such as the Sims Online and Second life, where players from around the world can inhabit characters and enjoy activities perhaps not available to them in their own surroundings. Drugs optional, not required.
No opinion here, just an observation that Philip K. Dick was an exceptionally cool writer who's brain was way ahead of it's time. He wrote Three Stigmata in the early 1960s.