I know that Xemnas formed the organization to get his hands on Kingdom Hearts by the means of destroying Heartless and taking the hearts away and leading them to Kingdom Hearts. I get that, but I'm not sure if it was artificially made, I mean in KH:BBS it was already there and its not like Xehanort built from scratch. I believe that there are two Kingdom Hearts, one being true and the other one being nothing more than a fake. They mention in KH: BBS that Kingdom Hearts is a world balanced in light and darkness, besides the part where Sora open the door and light shines through, everything else was darkness. I think Ansem was mislead somehow, because the only way to open the world of Kingdom Hearts is to use 7 of the purest hearts and create the only Keyblade to be able to open the world.
It seems Malificent was right and Ansem was wrong = /