I agree...like how I am with children, I either feel neutral toward them or even dislike them like I would adults (except in the case of disliking a child I wouldn't be as open about it as I would be with an adult, I would just stay away from them, because I would never want to hurt a child even if they got on my nerves) ...or I bond with them like a friend. I still keep their age in mind, but there isn't as much of a distinct "me adult, you child" role-playing scenario. I tend to be able to manage middle-school aged and sometimes even high-school aged kids fairly well for this reason, because outside of obvious concessions to their immaturity and youth, I treat them like equals, like people.
I think it's why I like cats so much too, because I respect their individuality, even though they are animals, I think they are unique personalities just like anyone else...and I think people who don't like cats refuse to understand that, and treat them as mere pets to be dominated. My mom is also an FP, and she likes dogs, and I've noticed she has a similar way with her dogs, like they are individuals to her, and she even brings one along on car rides and buys them plain hamburgers and things in the drive-thru lol. My mother is also very good with children, very flexible, but I think she is over-permissive, though.
I can get along with NFJs and SFJs quite well despite their need for roles. With FJs I just accept that it's going to be more of a "process" to get close to them, like they have to decide where I fit in to the framework, what my role is in their life. It's actually great to have two FJ sisters because they adore me on the simple grounds that I am family, and in their minds family is family is family. It makes me feel very accepted and forgiven. On the other hand, with FJs who aren't family, like I said there is more of a process until they decide which place they can trust me to be in their life.
I used to kind of get amused with my ESFJ ex's insistence on roles (and even frustrated once and a while) but I have to admit it actually made me feel secure with him, like I could depend on him to do certain things, because he perceived that as his role in our relationship.
I love SFJ men. They're like having a mommy, sometimes, even though they're boys. LOL. That sounds weird, I know. I like their nurturing and their guidance. So in that sense I like it when they play the role, and I don't mind their feeling of dominance or superiority in doing so, I'm attracted to it, as long as it isn't taken too far.
I guess I'm kind of replying both to what you said, and also to what skylights said.