When Walt Disney sat down with his Imagineers, he knew exactly how he wanted DISNEYLAND to look and feel. It would later be called "the architecture of reassurance" by people who studied such things, but Mr. Disney would simply say that he wanted his guests to instantly feel comfortable when they entered the park's front gates.
The idea was to design comfortable, welcoming spaces that seemed familiar even to guests who had never visited the park before. This design strategy was extended to the world outside the parks too.
Downtown Disney was built with the same thought behind it. Build an exciting, vibrant area that would make people of all types feel like they belonged in it. The kinetic energy and surroundings make for an exciting location where everyone wants to be; where everyone feels like they belong.