I think we could say fairly categorically that if you don't understand why theism is ruled out, you're not ready to post here.

I feel like repeating myself here: just don't foster the discussion concerned directly with religion. We don't fight religion, we fight for people's sanity. Otherwise, it's like not allowing sick people to a hospital. In most cases, good hygiene within the community should be enough to keep the patients from harming each other.