If you want to fight “religion,” then you have to get religious. Ideas that fall under the category “freethought” are too specific, and thus too small individually. Atheism, for instance, will never truly displace theism, because Atheism is a single answer to a single question, while theism is always wrapped in complex philosophical systems and mythologies. It’s why Atheism, alone, will always be on the defensive. Atheism is a principle, while, say, Christianity or Islam are robust systems. It’s like comparing an apple to an orange grove.
To compete, freethought needs to answer all of the questions that religions tend to. Why am I here? What does it mean to exist? What is truth? Maybe dozens of others. Axioms must be formed, founded in reason, from which profound, philosophical truths can be derived.
Zeroism is the religious application of freethought – a convergence of unabashed skepticism and logic, from which Agnostic atheism, nihilism, hedonism, individualism, and other freethought principles are naturally derived. By pulling together reason-based epistemology, ontology, ethics, etc., we can form a complete and rational philosophical model worthy of a religious level of commitment, around which we can build a cohesive community of freethinkers to rival any theistic religion.