
Originally Posted by
chocobo hunter
But what I don't understand is that isn't everyone supposed to return/meld back into the planet no matter how hard the try. (ex. Elmyra's husband) or are Cetran race able to maintain there original form/memories within the Lifestream. Can anyone explain the reason for this?
Yes, with the exception of the Cetra. They had a special connection with the Planet. They probably have more control as to what happens to them after they die and when they are in the Lifestream. This is especially true for Aeris. She is able to actually control the Lifestream itself.
As for Zack, he is not a Cetra, so when he died he was absorbed into the Lifestream just like any other normal person. What I think is that Aeris was lonely and wanted a companion, so she went and found Zack. That's why he appears at the end of AC.
The ending of AC is real. Aeris and Zack are actually there in the physical world. You can tell because Aeris is kneeling down beside two kids before she gets up to return to the Lifestream. What I think this means is that if Aeris wanted to, she could bring herself (and possibly Zack too) back into the physcial world, but she doesn't want to. She is telling Cloud that it's okay, and that she doesn't want to be resurrected.