If you choose Meridian... you will know they exist because you will be able to see them. It is not always certain people... I know some who claim they see a certain place, more than person. But it is a window into your world despite.

[Proof! ... Right? Surely there was no way for something or someone to... fake perfect visions of all their worlds and all the people within them acting as they should?]

As for what is "right"- it is not a complicated question.

Which is more right? To save the worlds that are real, and all the souls on them, or abandon them to death or nonexistence in favor of the promise of a "new world" that Zenith promises will somehow be what you desire... while also being what a soul-eating demon or a maniacal madman from the sewers desires.

The answer is remarkably simple.