You know it's interesting that, as a religion, Scientology is pretty much completely lacking in any creation stories or explanations for why we are here. Their central tenet (that there are ancient alien souls living within us and hindering our wellbeing) gives us no explanations about where we came from, and really doesn't offer a very positive outlook on the meaning of life in general. For a religion based on self help and enrichment, it really doesn't offer us much of a motive.
Aside from a few books written by L. Ron Hubbard, there really isn't much of a moral code, either, unless I'm mistaken. What's the point of being in this thing--prestige? Is it just incredibly fun or something? And how did it get recognized by the IRS? Because the only thing they seem to have in common with most religions is that they believe that there's something wrong with the world.
But unlike most other religions, this central belief isn't that important. It's pretty specific to human beings on this planet (maybe not even all of them, but I may be wrong), and doesn't really answer much. Where did Xenu come from? Do beings on other planets, if they exist, presumably have few problems and live with god-like awareness, since they don't have to deal with this thetan problem? Will there be a second coming/apocalypse/semi-verifiable vague prophecy that deals with the future of the world? What were humans like before we became infested with thetans? Unfortunately, questions like these probably aren't asked much, because Hubbard made a big deal about how terrible it was to question (in even the most innocent sense of the word) the COS.
The only other belief systems I can think of that resemble Scientology are New Age cults--and we call them cults because they, like Scientology, lack any real structure or dogma in their beliefs. Most of them are centered around some guru who decided one day, hey, lets
stop eating food, or at least dream about it, or dude, I think I'm
channeling an ancient warrior-god, and they amass followers mainly based on the tenet that they know something, or can reveal something, about the world that the rest of us do not/cannot.
Of course this all ignores any of the many definitions of the word 'religion' out there, but I tend to ignore those things when I'm only evaluating ideas from a sociological perspective. In my opinion, Scientology falls incredibly short of the complete doctrine needed to qualify as a religion. Discuss?