I blog as Art Vandalay for the following reasons: 1. less chance of readers prejudging the value of my opinions based on who I am, 2. greater freedom to say whatever I like without fear of it affecting my employment (but I acknowledge that no one can be purely anonymous on the usual Web), 3. I just want to separate my online persona from the "real" me. More explanation.
1. Under the standard of sufficient impartial scrutiny, any allegedly supernatural things don't demonstrably exist. And even if one or more are still assumed to exist, none have demonstrable relevance on how the universe operates. (But these ideas may nevertheless affect culture, behavior, and thought, like many other mistaken ideas have.) 2. Moreover, all existing natural things come from, are composed of, participate in, and will eventually wear down into, material stuff: physical substances acting according to consistent forces.