2. Scientific reason: I went to a natural history musem and learned about the earth's history. This confirmed my lack of belief in a god. Think about how long the earth has existed (4.5 billion years). Life's emergence (3 billion years ago), the pattern of life developing matches evolutionary theory; 5 mass destructions have caused the death and extinction of most of the species that have ever existed (i.e. ice ages; asteroids; massive volcanic activity, etc); so...
Logic like the stuff in Hooberus link is what helped me see the error of my former thinking. Scientists will look at something and study it to find out it's origins and history whether or not it conflicts with their belief system or anyone elses. Creationists start with a belief system and try to mold data to fit their particular persuasion. Just like JW's translating the bible. The translate around their beliefs in order to make it appear the scriptures support their doctrines.
"Secular" Natural History museums also start with their own philosophical presuppositions and then interpret the data accordingly. Using these anti-biblical presuppositions (e.g. naturalism, etc.), they then generate a "secular" version of history, in opposition to recorded history in the Bible.
"If you are concerned about the propaganda presented in natural history museums, this beautifully illustrated and full color book is for you. The book provides the true history behind more than 100 common museum exhibits. Excellent for school field trips to your favorite museum."