It makes sense to me that Ns are immature, Betty Anne. I think whatever has damaged them (genetics plus some experiences) breaks the development of empathy. The clever ones learn how empathy looks, but they honestly don't know how it feels, at least not in normal amounts. Without empathy, people get stuck in a childlike state.
I also think a lot of Ns are survival obsessed, feel alone (because they don't understand intimacy or deep authentic connection), and so it makes sense that ambition, obsessive work, that kind of thing...would always take precedence over family.
The wishes, feelings and nuances of others? Not in their wheelhouse.
It's good that you're unraveling the patterns of your family, and never too late to change your own.
Bravo,
Hops