Simon, there was an episode of Star Trek; The Next Generation that said that all the different races of the galaxy were actually consisting of parts of the DNA of a super-chain of DNA of one race. It helped us understand why they all are "humanoids" and could mate to produce offspring.
Being a science fiction fan, Scientology could very well be along similar lines and actually make more sense. You are right. Mainstream religion is just as wacko to me. I suppose I fell for forgetting that in my comments.
In the past, it may have been nearly impossible to fail with religion once it is self-sustaining, but I don't think that will continue to be the case as the information age moves forward. Scientology may be going away within our lifetimes (or it may struggle on- no predictions from me). But the people at the top will probably get away with the money. I suppose that's a side-theme of mine. My greatest wish after the toppling of the Watchtower and locking up the leaders is to just let them run away with the money and leave the people behind to escape back to "the world."