Quote Originally Posted by gRomoZeka
Quote Originally Posted by ZelyeUrsuli
Maybe I'm simplifying it too much, but isn't the reason for the genitive with не существует the same as why you use genitive with нет (as in у меня нет...)

It's because it doesn't exist...?
Well, yeah. It's negative (or do you have another term for it in English)?
Absent, I'd say. DNE. Does not exist. But negative works.