Actually Rob it is remarkably simple to disprove the existence of a creator.

Our definition of what exists, whether in art or science is simply based upon its ability to cause an effect. Religion exists ... it has been responsible for murderous attrocities. Stars exist. People exist. Philosophical ideas exist (that is the idea itself exists). Books about god exist and have had an effect.

But if you take away the books, and you take away the preachers who, and you take away the tax exemptions, there is nothing left. Well nothing except a deep uneasiness in many people's minds that makes them want to invent something like a religion, or philosophy, or nationalism, or gang to which they can belong.
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DA Morgan