I think, as the world has become more and more hectic and bad news is delivered instantaneously and 24 hours-a-day, more people are looking for an escape. The Disney parks have always represented a break from reality.
"To all who come to this happy place: Welcome. Disneyland is your land. Here age relives fond memories of the past, and here youth may savor the challenge and promise of the future. Disneyland is dedicated to the ideals, the dreams, and the hard facts that have created America, with the hope that it will be a source of joy and inspiration to all the world."
To those of us who obsess over the Disney parks (and make no mistake, we spend lots of time discussing minutiae of theme parks here), going on a Disney vacation is almost a drug. It gives us an escape from our everyday lives where (most) of the people who are working there are friendly and treat us well, we can pretend to be pirates or pretend to fly on the back of a dragon, and we are surrounded by beautiful landscaping and architecture.
Sadly, the reality of the situation is that all of the above comes at a substantial cost. Most of us are logical and know the pitfalls of going into debt over a brief vacation. If we can't immediately afford a Disney vacation, we save up over a period of time and go when we can afford it. There are a great many people, however, who want the same escape that we crave, but who don't have the patience to wait and are willing to pay for their vacations on credit. Credit isn't necessarily a bad thing if it is used wisely and you are truly able to pay it off in a reasonable amount of time without racking up too much interest, but there are a lot of folks who only see the here and now and don't worry about the future until it's too late. I've known people who go to WDW multiple times a year, are DVC members, and who I know aren't able to afford this lifestyle on what they're making. After a while, there won't be any more credit to dip into and then it will become time to pay the piper.
Instant gratification isn't worth years of stress and grief in the future.