Recipe for Jealousy :
1 part nature,
1 part nurture.
Combine in a bowl, mixing at slow speed. Bake at 350 until a firm crust is visible on the outside.
Very simple recipe.
I tend to stay away from theories that involve lop-sided view points, or unexperienced parenthood. Surprise, people are complex. It takes most people a lot of self-work to get to a place where life feels simple and enjoyable.