I think Disney has a delibilating effect on people. Too many feel-good, stylised portrayals of our world tend to screw people up and give them unrealistic expectations (cf Romance Novels).
Witness Screwed Up Girl. Right now she's singing all manner of Disney songs to me over the phone - all from the 60s or before and exalting dead and long gone values and ideals, and encouraging people to have unrealistic expectations (like having a Prince and a true love and all that jazz).
Unhealthy. Very unhealthy.
At least children find out that there's no Santa when they hit puberty.