What if there was no "war" between humans and machines?

What if the Matrix is a system created to allow humans and machines to live in symbiose. After all, machines need the humans' energy and humans would hardly be able to live in the real life environment.

Machines within the Matrix are aware of their existence and of the Matrix, yet they act like humans, live like humans... why? because it's a better world than the reality?

The Architect talked about anomalies and the few people that revolted and would not accept the Matrix. Why Zion? If it's been destroyed 5 times already, why do the machines allow the rebels to rebuild Zion?

We do not know what happened to the other times Zion has been destroyed, was the variable of Smith present in those previous time? It would defeat the whole purpose of the story if the whole thing is just a cycle repeating itself endlessly.