How do various characters dreams affect them and how do people use dreams ?

The main characters in the story (Candy, Lennie, George, Crooks)  all have a common dream. Their dreams all revolve around a place to call home and people to call friends or even family. This dream, of course, does not come to fruition, and indeed Steinbeck seems to have designed his bleak world to preclude the possibility of escape from the cycles of loneliness and hollow companionship (whether found in drink, in prostitutes, in gambling) that come with financial hardship and dislocation.