I Have An Idea
The story about the wars between men and robots in the second renascence is full of plot holes.
What I'm thinking of is that if ever there was a Matrix, Using it would have been a pleasure for human beings -just like video games today are-.
So people start using matrix, getting in and out again to their real lives and maybe paying for it. And at some point they become dependent on it.
As the time passes the majority of people use matrix and only a limited minority remain outside which arguably are not the hi-level ones.
Imagine matrix developing itself with the help of human during this time. And of course there are staff (some of them guards) to service the parts and hold the whole matrix thing running. Which are gradually (maybe within 1000 years) replaced by robots.
Then comes using human beings as bioelecrical power supplies which i don't agree and is an stupid idea. (Using the heat of the earth core can be more efficient...)
What happens is, when the minority react toward what they don't have and others do, the matrix and it's physical guards (robots) starts to protect itself as the representer of men inside to protect their rights.
What happens to men inside is that they get into system so much that they forget that reality ever existed (maybe during several generations.)
Seeing the success of Massive Multi player Online Games (ie. World Of Warcraft) today which have a massive amount of users and carry their own rules during the game play makes me think that all this is not far from reality to happen.
What I am saying is that, it is just a mater of time before humans are in matrix more or less.