It was never Macbeth's place to become a king, he was a great warrior and Duncan was a great king and there was no reason to upset that balance. So obviously when Macbeth did disrupt the balance of society nature needed to find a way to eliminate him.
Nature used the aid of the supernatural in order to push Macbeth over the edge letting him fall into madness. Macbeth has to make the active choice to commit each and every one of the terrible crimes he commits, and nature itself is unable to drive him to commit these murders so it enlists the help of a multitude of supernatural beings in order to make him decide to force himself into madness. We can see that although the supernatural beings portrayed in Macbeth seem to be evil and unnatural at no point in the play do any of the beings lie or commit any acts that would be considered as evil making them seem more natural than evil. The witches use fancy and unspecific wording to trick Macbeth into coming to his own conclusions about killing the people he does. By confusing Macbeth through their initial evanescent speech hailing him as the "Thane of Cawdorthat shalt be king hereafter" (1.3.50) they are able to put into his mind that the "horrid image [now] unfix[ing his] hair" (1.3.135) has been buried deep in him all along. The witches take advantage of Macbeth's weak and malleable character by telling him exactly what he wants to hear, in doing this the witches continuously further his descent into madness. We see this more towards the end of the play when the witches convince Macbeth to "laugh at scorn, for none of woman born shall harm Macbeth." Here, in convincing Macbeth that he is unstoppable by any natural being, the witches, without lying, force Macbeth into courageously taking on Macduff and his army and this, as we know, ultimately brings about Macbeth's death. In order to further their influence on Macbeth, the witches also attempt to influence him through indirect contact: When Lady Macbeth asks of the "spirits that tend on mortal thoughts [to] unsex [her], and fill [her] from the crown to the toe top-full of direst cruelty.