My wife and I had this discussion recently when trying to decide to return to WDW or go elsewhere. We've been 5 times and stayed both on/off site, had dining plans and not, etc. You can get great entertainment many places, see Disney "stuff" at malls and watch all the movies you want to get a fix. My feeling was that you get all this great stiff in one area. So is the rides? + the food? + the environment?, + entertainment? I'm newer here so if this should be in another thread, let me know.
I. can't. stop. going. I've changed the way I vacation there, since all the nickel and diming recently, off vs onsite, but I still have my passes, still go at least 1-2x year and still love the place. I go on other vacations, but I admit I do relax more and feel safer there vs. vacationing in large cities, cruise ship ports or abroad, where I'm always looking over my shoulder and cautious to some extent.