Well, let's see.
As a kid, Epcot was my favorite. I legitimately loved edutainment, I've always loved aquariums and back then The Living Seas was the best, and JII was one of my absolute favorite rides (not to mention Image Works).
Once Epcot started going through its changes, I started liking the Magic Kingdom more, just as red blooded Americans should.
The first time I ever went to Animal Kingdom, it was cold, I didn't see much on the safari, Everest didn't exist yet, we did Kali and Dinosaur, and then we left. So, bland safari, Kali and Dinosaur as the only other attractions done, no animal viewing, cold. Plus, we happened to be with another family and the girl my age was being a royal you-know-what and ruining everything with her insistence on hating Disney World.
That stuck with me, and years later I refused to ever go to Animal Kingdom even when I got in free. I just assumed it was a lame park with attractions I didn't like because that's all I know. I only went to do cast previews of Everest. Since I would walk directly to Everest and directly out, I didn't realize there was so much to experience.
One day I decided to try and do as many attractions as I could in one day, starting with DAK. That day, I realized the attractions were actually fun when I wasn't cold and sitting next to a jerk. A couple weeks later, I spent all day in the park with a friend, and we did all the little back trails and animal viewing things and went to Conservation Station and I started realizing how much ridiculous depth there is to the park. Not a lot of rides, but the rides that were there were fun, and the shows were great, and the themeing and sense of exploration and the animal walking trails were off the chart. At this same point, I was in Magic Kingdom every day, so it was becoming (while still awesome) a little less novel to me.
So, at this point, Animal Kingdom might just be my favorite park. That's skewed by how much time I've spent in MK, but if you asked me what park I would want to go to today, it would be DAK.
tl;dr lists
Childhood (Birth to ~15)
- EPCOT Center
- MGM Studios
- Magic Kingdom
- Animal Kingdom
Teenage Years (15-20)
- Magic Kingdom
- MGM Studios
- Epcot
- Animal Kingdom
Adulthood (Drinking Age to Present)
- Animal Kingdom
- Magic Kingdom
- Hollywood Studios
- Epcot