Why is Disney World so great?

So many people travel to Disney World each year. Why do they spend the money and time to go there?

-It's been called the most magical place on earth. Things such as Cinderella's Castle make it seem like you're in a fairy tale

-There's so many things to do with all different kinds of rides, waterparks, shows, places to eat, things to see, shows, parades

-There's always something new to see

-The park is so big it takes 4-5 days to see everything so you will never be bored or run out of things to do

-Children love to see their favorite Disney movie characters there and take pictures with them

-Good places to eat at

-Luxurious hotels

From what you know about Walt Disney World so far why would you want to go? If you've already been there what makes you want to go back again?