Great creations spring from the intimate, the everyday, what can "simply" be loved. Maybe because great creators are humble. The idea of Disneyland took shape from Walt Disney's taking his daughters to a common amusement park. Great creators don't ignore their truest voice; their own heart.
It is said that one man of vision can change the world. Walt Disney changed something bigger than the world: human psyche. In giving the real shape of the essence of America with Disneyland, in making fantasy touchable and available to be acted upon and, last but not least, creating the thematic experience, something that has spread to all aspects of life, he certainly upgraded the fundamental relation of men to artifice, play, art and faith itself.