When I am doing chores at home - cooking, doing laundry, or finances, Bunny wants to be around me and interfere with what I am doing. JD, on the other hand, will go do his own thing - play with army guys, pirates, or knights.
While JD makes things easier by staying out of my way, I it may be a better experience for a child to be around an adult, learning from that? While she's a gigantic pain in my ass when I'm trying to get things done, she's also interested in what I am doing. She is listening and watching everything I say and do. JD is simply not getting as many hours learning directly from me, even when he was Bunny's age.
On the other hand, we all develop in different ways. One way is to go explore on your own without having anyone to guide you but your imagination. Another way is to seek out a mentor or role model to emulate.
To be the best parent possible, I ought to spend more time getting into JD's adventures while consciously having a role to delegate in the event that Bunny (or JD) wants to help.