What kind of magical world does Lord Voldemort seek? His ambition is to be the greatest wizard, and those ends require the fulfillment of his motives.

In a Voldemort-ruled world, where there is no more Harry Potter to defeat him, what would he do to the allies of the good alignment? Would he want to exterminate all survivors, as a form of racial cleansing, disregarding their bloodlines? Does he plan to hunt down and exterminate, as well, the followers who had abandoned him? How does he plan to deal with himself as a paradox of the ideology he believes in? Utilize the most powerful means found in the Dark Arts to “clean” his blood, or even “clean” the blood of his followers.

In his world, will the Dark Arts prevail as the only kind of magic that wizards and witches need practice? Such a world would render the magical community a cunning and destructive force, with the potential to cross over into the non-magical community and overtake them, however he plans to do that. During the summer before Harry’s fifth year, he encounters a dementor—having already joined the ranks of the Dark Lord- in his own neighborhood. If forces from Voldemort’s camp are already literally extending to non-magical territory, then it is possible for Voldemort to consider taking over the muggles as well. His ambition and power would be immensely great, should he succeed with becoming the greatest wizard, it is possible for him to want to extend his power with the seizure of the muggles.

However, he still has the other option of keeping his exclusive kingdom of dark witches and wizards. Yet, with all his opponents conquered and/or exterminated, where will Voldemort and his people direct their sadistic ways? Magical punching bags baring the faces of their already defeated opponents? Or will they be a world filled with so much Machiavellian ambition, that they may end up hurting and even murdering each other towards the downfall of all?

Voldemort had once told Harry, that there was neither good nor evil in the world, rather only those who seek power or are too weak to do so. It appears that Voldemort does not believe in the existence of good and evil as two different things, otherwise known as a Manichean view of evil, wherein evil is not the absence of good, but is a separate force. He believes in neither, thus he must not even consider the Dark Arts as something that is evil, any more than he consideres Harry Potter and his allies as the good alignment. His definition of Dark would most likely be, “one who seeks power.”

If he believes that the only individuals worth living in his world are those who seek power, we can imagine the Voldemort-ruled world, as one wherein even his own people may have tendencies to fight each other for the reign, and maybe even attempt to overthrow the Dark lord himself.

If he succeeds in establishing that world, there would be no idle followers, everyone seeks power. His would be a world of potentially constant cataclysm. If they do no try to overthrow Voldemort, in the throes of personal ambition, they will do it among themselves. The Death Eaters show obedience for Voldemort and manifests personal hope for his reward, but some of them, such as Bellatrix Lestrange or Barty Crouch Jr. have each claimed that they would be much revered by their Dark lord or that they would be honored above all his other followers or "beyond the dreams of wizards". Such an attitude suggests a high level of competency within the circle of the dark side, and that may point out at the possibility of intra-competition amongst them. Why would that potentially destructive competency disappear from a magical world where Voldemort reigns, whilst it is likely that he would exterminate any one who he deems incapable of seeking power?

Even if he establishes a world wherein all his followers are made to have the same degree of glory, with him as the only higher power (he did say that he wanted to be the “greatest” not one of the greatest), who else is available for his followers to thwart if he preaches the power-seeking ideology to them?

And even if he exterminates them all, in the interest of his established glory, which he can potentially do if he does achieve immortality, what kind of life would he lead, but one in which he is alone. In that case, who else is there to direct his sadistic tendencies, but to himself.