Park Hopper with a 3yr old. Is it even worth it?

[starsweeper]

We always get hoppers. My kids (9,9,5,4) still prefer MK over every other park. We never spend more than 1/2 day at the other parks. The kids like the multitude of rides at MK and end up wanting to go there later if we start at another park. YDS, especially, became really interested in rides last trip as an older 3yo, and was really upset when the other parks had so little for him to ride.