I think of WDW as a toned down, PG version of Las Vegas. The parks (casinos), specifically the rides (tables), are the main draw for most people, but not for me. Don't get me wrong, I love the rides (and the tables...actually, sportsbook for me), but the ambiance is what I enjoy the most. I'm just as happy, arguably happier, with walking around World Showcase at night and grabbing a few beers than I am while on a ride. I love being in Animal Kingdom when the sun is just coming up, and while I most certainly enjoy a morning safari ride followed by a climb of Everest, I feel most relaxed (isn't that what vacation is all about) when the Dawa Bar opens and I can grab a 10a Safari Amber and take in the Harambe streetmosphere. I love the Mountain Range, but there's nothing better to me than once the parked has closed, my wife and walking around a nearly empty Magic Kingdom, taking in a dark and quiet Frontierland and Adventureland, until a CM tells us that we need to head back to the hub. And, while everyone is either exiting or shopping on Main Street, we grab a corn dog nugget meal at Casey's, find a seat, and watch the "Kiss Goodnight" a few times while the park empties. While everyone else is rushing to ToT or Slinky at 8:59p, you'll find me ordering a beer or two at Tune-In Lounge, and either sitting around Echo Lake or strolling down Sunset and/or Hollywood.
I haven't even mentioned the resorts, and how much fun it can be to explore them while the parks are at their hottest and most crowded point, or just heading back to your own and getting in some much needed pool time.