>>13591228N complete believes he is correct, it's not his ideal world he wants to create, its the truth; the world that was meant to be. He thinks everyone that fights to keep their pokemon and those who talk about the bonds of friendship are blind idealist that don't realize that there are more people harm pokemon than befriending them. He also believes that even Pokemon that love their trainers would be better off wild and free.
So his goal is to use Reshiram. He believes Reshiram will work with him, since Reshiram stands for truth, and N believes only he knows the truth.