Yes! Especially for adults! The hopper pass allows you to break up your day and experience all of Disney.
When you can travel between parks, for instance Hollywood Studios (HS) and Epcot (EP) using the boats you then get to see a few more resorts, Disney's Boardwalk.
We for instance we only do half days at Animal Kingdom and then go to a second park. We enjoy all the adult things at Epcot, so we will spend the morning doing more kid things at Magic Kingdom or Hollywood Studios, then do the world showcase at night.
Also, it depends on how many days you are there. There really are so many factors to it, but for us and most of my clients, the Hopper pass is the way to go.