There is something that has been bugging me:
Stefano was SO devoted to and enamored with his adopted daughter Kristin, that he went to extremes, to...dress up as Elvis (uh huh) and impregnate Susan thus creating EJ.

He loved Tony, although... his did deposit him on a deserted island for 20 years, (minor detail). He was a good father to Megan, René' and Bengy...okay, they all died as a result of his agents but still. Sure, he locked Lexie in a tunnel and starved her but stuff happens.
Where does EJ come off not loving an adopted child because it has to be a Dimera?
Stefano NEVER imposed BLOOD or even compassion as a prerequisite for fatherhood.