That is an excellent analysis and was very instructive. Why do you consider yourself an athiest?
#1 Because if there is a Creator, I have not met him/her. If there is a Creator, then that person is actually someone we could touch as a physical manifestation on the Earth (albeit an all powerful, immortal being) in this present day material world. #2 Because I do not agree with anyone on the nature of what God could be if evidence of such a personage were revealed to exist (this includes various translations of the Bible and those of other religious texts). #3 Human and all other life is finite and there is no life in the Universe other than that which is on this Earth. #4 Most importantly, it does not matter. If there is a God, our lives are pre-destined/pre-determined - - according to your theological perspective, the case of Job, Moses, Jesus and others, asserts this is the case. The chemistry of genetics also lends to the idea that life is pre-determined and possibly not beyond human controls. There are many more...