Scientology deeply believes in reincarnation, especially since it gives them a good excuse to work people to death. Workers like Stacey Moxon Meyer can justifiably be abused until they die. After all, they will immediately get a new body and reincarnate therefore life is cheap. You Sea Orgers will have plenty of time on your third or fourth liftime to take COS classes once the planet is cleared.
That is why they sign a billion year contract to enter the Sea Org. You are expected to join, work out your life, die, reincarnate, feel the pull of Scientology, re-enlist, and then work another sixty or so years on your contract. Only 999,920 more years to go. Whoopeee! Then you die. Lather ... rinse ... repeat.
What I don't understand is how COS gets around the concept that NOBODY has come back to claim they are reincarnated, not even great leader L. Ron Hubbard who has offices, cigarettes and mansions all over the world awaiting his return. Jeez the mansion at Gold Base alone is fantastical. I often joke with my lawyer that, despite being dead, L. Ron Hubbard has a much better office than my legal rep. In fact he has many!
Yet LRH has not come back. NOBODY has come back and said they were here before and want more. How is this fact downplayed? You are not supposed to discuss the tech, but, geez, does this issue ever come up in cult circles? I know they love to ignore the truth, but, sheesh, how do you ignore that?