Dr. Korby wasn't there. Only a shadow of his former self. What's so "perfect" about this moment in the episode, is when Roger kills himself along with Andrea. This less than human version of himself still has some of the flesh-and-blood Roger's mind... enough to realize that in becoming an android he had indeed lost himself. To what end? He realized that he could never be his original self. Christine could see right through him. Now he was nothing more than a machine. And so he self terminated.