First watch this video (it is from Project Natal, on the XBox 360):
If half of this video is true we are in serious trouble; it will be the start of computers replacing people as companions. Sure there are a couple people right now that attach themselves to the odd story book hero, anime girl, or new hot American Idol, but those characters can't react back to your affection. This program on the other hand, has a personality, idiosyncrasies that take time to learn, interaction in both physical and mental.
It could be argued that the interaction that is taking place (at least from the standpoint of the human) is real. And as long as it feels real for the human it will push all the buttons that a real human interaction will normally push, this means that there won't be a reason to have human relationships. Why try to date somebody that will just break your heart in the end? Why have a baby that will wake you up in the middle of the night? Why put so much effort into a kid that will not appreciate the effort until far too late in life? All of these can be replicated in the program, and you get none of the inconvenience.
The human race might have just met its hardest foe yet -can we survive when the other option is bliss?