Like others here I've always been atheist. I've never known any other way of thinking on this subject and I can't even imagine what it must be like to be a believer. Welcome from me, btw.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'