I think there are two things at play here. The first is that people are predisposed to love and take care of their children (and there's a bunch of associated

I think there are two things at play here. The first is that people are predisposed to love and take care of their children (and there's a bunch of associated brain chemistry that helps with that). And the second is that there exist people who don't understand that not everyone is interested in the thing that they are interested in. [This second one seems to be completely uncorrelated with intelligence ... as far as I can tell. Maybe a personality spectrum thing?] Anyway. If you mix the two together you get people who insist that their children must be exactly like them because otherwise their children would be doomed and that would be unthinkable. More intelligence (and/or forceful personality / competence) may make the problem worse because clearly you know what you're doing (after all you can describe the thing with such great an articulate words) the problem must be this ungrateful child that doesn't know you're paving a golden path.