My family (including DDs 13 and 10) would MUCH prefer 3 day hoppers over 4 day non hoppers. We always do 3 days and we go hard
We use maxpass and hop like crazy. We have fun going back and forth and getting onto as many rides as possible. We pull MaxPasses all day long and typically book the next one in line for the one we are on. I got 34,000 steps on this past Saturday (because of the rain we got on even more rides than usual!) I know this isn't how everyone likes to travel, but it's how I've traveled all my life and my girls seem to enjoy it as well. We really enjoy the three days to the max and then are ready to collapse at the end!!
The other reason we like the hoppers is sometimes Disneyland gets too crowded so we like to escape a bit to California Adventure where it always feels like there is more room. I bet that will be even more of an issue when Galaxy's Edge opens.