My own parents loved me and raised me as best they knew how. Perfect they were not. But I know they tried. They are good and decent human beings. And I know they sacrificed for me. I have resented some aspects of my own upbringing, but life is not perfect.
Often, "worldly" parents act accordingly, and their children thrive because of the life choices (often real sacrifices) the parents make.
The problem is not that worldy parents care more about their children (they run the gamut of course just as JW parents do) but that the JW perspective is not in synch with reality. JW parents make choices for their children that are not in their long term best interest. Examples that come to my mind (from personal experience) include lack of participation in extracurricular activities, poor socialization with peers (JWs are social outsiders-we are no part of this world), a too narrow educational focus (Watchtower uber alles), excessive time spent on JW activities (especially true if your father is an elder) rather than with the family, an eschewing of proper preparation for adult life because the world is ending tommorrow etc.