I think the flaw of organized religion is that it takes what is supposed to be a subjective, mystical experience of god/universal conscious/nature/whatever and dogmatizes it. As soon as you start saying what is/isn't god, what god thinks, etc., and focusing on that, rather than focusing on the mystical, personal experience and personal knowledge of whatever you want to call it, your religion becomes somewhat scientific in a way, and it fails to serve it's purpose. Religious experience can't be quantified, classified, explained, or limited, that's why it is supposed to meet a psychological need that science doesn't satisfy. But this is what modern organized religions do through dogma.

Wait, was that on topic? Did it even make sense? Oh well, who cares...