Well, if the start of Silent Assassin is any indication, 47 is not machine, I wasn't arguing that he doesn't have any feelings, just not a lot. Or he doesn't show them because he either:
1)feels that they get in the way of his career(obviously)
2)is severely traumatized(cloning, career choice, etc)
Yeah, I thought about a girl too, since that would be probably the easiest and the most accessible way for the audience to set 47 on the right track. Introducing something he cares for.