The problem, is the same faults of religious movements happen with these religions-without-the-supernatural, but as an atheist you don't have the same supernatural to mock as a defense.
You see faith based reasoning and very strong emotional reactions to things that are not real.
I agree, but feel like this is a not a bad thing most of the time (even though it can be), and I say this as an atheist in the traditional sense, with iconoclastic tendencies when provoked...