I love Animal Kingdom. Went twice on our last trip (once for a whole day, the second time for a half-day).
However, I would say that if you're even posting this question on the board, then maybe you don't want to go?
As a devout animal-lover, nothing bugs me more than seeing people wander half-heartedly down the Pangani trail or the Maharajah trail, barely even bothering to look at the animals. On our last trip, we stood next to a man who was trying to take a photo of his son in front of one of the tigers on the Maharajah trail. We told him that if he walked up ahead to the next section, there were lots of tigers close to the glass, easily photographed. He just looked irritated and said "we don't have time for that, we have to meet someone at the front of the park". I had to wonder why he was even there. The tigers are some of the most magnificent animals you'll ever see, and AK makes it possible to see them up close, in an absolutely stunning setting. If someone can't appreciate that, then maybe they shouldn't bother.
I think it's pretty simple: if you love animals, you'll love AK. If not, consider spending your time at a different park.