Data tries to create a child and fails.
Yeah. That was one of episodes which showed Data as a very compelling character because he was someone like Pinocchio. He was an android who, more than anything else, wanted to be human. Just as Pinocchio was a little wooden boy who really wanted to be human. He gave us a very interesting point of view on what it means to be human and sharing in his struggle to try to become human.
For example, when he created an android daughter, this was a very touching and moving episode because he wanted to experience fatherhood, reproduction, having a family. These are very human qualities that he had not had any direct experience of.
Unfortunately, his experiment didn�t work out and it was a very sad and poignant episode. However, as Data at that point in his evolution as a character had no emotional response, we were left wondering; 'How did this experience really affect him?'