It's not all exactly the same thing. They have different reasons, at least. Unless the Storyteller was part of experiments to create immortality and brought us all here because they're lonely.

[It doesn't seem so implausible to her. If there are really innumerable universes out there. But then again, with the Kingdom Hearts universe already being comprised of multiple worlds, she'd had her foot in that kind of idea since she was "born."]

Well, if what we've heard is true, it sounds like that's the case here, at least.