You say "we". Why do you sail DCL if you don't enjoy it?
DCL has lots of fun things to do onboard. Waterslides/watercoasters, movies at the pool, scavenger hunts, interactive games & audience participation game shows, deck parties, baby races, miniature golf, virtual sports, high quality shows, chances to meet the characters, a traditional promenade with a stunning view of the ocean, where you can walk laps or play shuffleboard etc. etc. Most DCL cruisers don't want Disney's beautiful oceanliner-style ships to feel like the typical floating shopping mall with mini entertainment center attached on top (er, I mean, a "fun" ship).
I don't think anyone wants
Castaway Cay to feel like a water park. It's extremely beloved exactly the way it is: beautiful and peaceful. In addition, the water slides are fun, as is the climbing area over the water, the aqua trikes and jet skis you can rent, or the wonderful bike rides you can take through the island. There are organized games and dances as well, and you can meet the characters in their swimming gear. That's fun.