If I say I agree with the statement "religion is poison", you may want to know how I define religion in this context, and what I mean by that critisism. As I was trying to lay out, I can see the validity behind such a statement, when you assume religion to be a (pre)defined set of beliefs, and separating people into those that belong to a religion and those that don't, based on how they happen to subscribe to a different set of beliefs or even no particular set of beliefs.