Using religious terminology, Earth would be considered a “purgatorial” plane.
Anyone of any level of consciousness can be on earth, thus giving everyone a chance at maximum growth opportunities.
There are certain things you can do on Earth that can’t be done on any other plane ie. become enlightened without having to go step by step through each astral “level”.
Theoretically, one could go from being a completely unevolved soul to Enlightened in one lifetime here.
Does that ever happen? lol no
but everyone absolutely has the opportunity to grow as fast as they want, if they so choose.
Well, all humans bodies are from alien experiments… so yes.
There are large number of people who became individualized consciousness that are from other planets ie this is not their home planet.
There are some who are originally from Earth in terms of where they first achieved their individual consciousness ie. this is their home planet.