If it were like The Matrix and you had no idea it wasn't real why would you care?
If everything appeared natural, but you knew it was an illusion, that might be disquieting, but better than oblivion.
If everything appeared natural, but you knew it was an illusion, and could control events and environment, that would be AWESOME!
If you were in the machine but able to interact with the real world -no illusions of reality- it would be dependent on the individual. Some might find this type of immortality appealing, especially if you could be helpful to those physically living. Others might find this existence horrifying.
If you were in the machine but unable to interact with the living world... simply being alone with your thoughts forever, well that could be a living Hell.
Of course my personal preference would be to have my personalty transferred to an android body, physically indistinguishable from a human. But that's not within the parameters of this poll.