We and all mankind need not just True Parents but also True Children for our salvation. Engrafting is not possible without the model branch. In order to become true children before True Parents, we need True Children as a model. Before True Children were born, elder members joined and became adopted sons. Then when True Children were born, they became our elders, and through them we can become true children.
True Parents are the owners of love.
Their hearts are comforted and liberated by True Children. Without True Children as their object, True Parents would be sad, and they could never give us complete salvation. True Parents' hearts could never be comforted enough through us. True Children are our second Messiahs. Change your attitude toward True Children.