Yeah, I just *hate* haters, don't you?
You might want to review http://www.cracked.com/blog/5-...
But here's the key: When a Scientologist (or Muslim, or Christian, or yoga enthusiast) says it works for them, this is what they're talking about. The mythology isn't important -- if these rituals have saved your life and later on a teacher says, "Yeah, this technique works because of the ancient thetans that live in your *******," you're going to shrug and say, "Sure, sounds good." If you tell the lady in yoga class that the reason she feels better afterward is because negative spiritual energies tend to pool in the hip joints, you'll get the same reaction.
Then if you, as a cool, rational person, butt in and say, "Actually, yoga is just engaging the endonomic nervous system and reducing cortisol levels," all they're going to hear is you replacing a very easy-to-understand explanation with a very complicated one that sounds like gibberish. If you smirk and roll your eyes at these gullible lemmings, then go grab a mirror and smirk at yourself, partner, because you do it too.
You physically don't have room in your brain to keep track of how everything in your world works (****, you don't even really know how your brain works) so you can feel all superior to a Christian who doesn't believe in evolution, but somewhere there's an engineer who feels superior to you for not knowing how your iPhone works (and you know "endonomic nervous system" is just a nonsense phrase I made up, right?). The reality is that you don't know how your iPhone works because knowing that wouldn't change your day-to-day use of it at all. Likewise, thinking the Earth is only 6,000 years old doesn't make it any harder to have, say, a career-repairing air conditioner. But believing that self-discipline, patience, and hard work are sacred virtues from God definitely makes it easier.
And if you look hard enough, you'll see that this flaw -- favoring what works to the exclusion of everything else -- encompasses everybody. The compulsive liar got to be that way because it works. So did the bully, the racist, and the greedy bastard. And every single cult, hate group, or political party has figured out that you can ensnare people by gluing the weird parts onto a bunch of common sense axioms that nobody can disagree with.