How do you become an Atheist?

[Darwinian]

I was born an atheist and during my impressionable years no-one tried to indoctrinate me into any particular faith. Instead I learned about evolution, natural history, astronomy etc. etc. By the time things like God, Jesus, Noah's Ark, Creation and the Bible were mentioned to me I was past the time in my life when I would just simply believe because I was told to. Basically I had built up a healthy immunity to the religious virus. And I really do see it as a kind of virus that infects its host in such a way as to propagate itself further.

So, nothing brought me to atheism as it is the natural state of the human mind unless infected. I simply have absolutely no reason to accept the beliefs of those who lived many, many generations ago and who lacked the basic scientific knowledge that we have today. To me that's akin to taking a sick child to a witch doctor rather than a hospital. Just doesn't make any sense.