Clearly it's not practical to list every single thing for which there's no evidence. That's why the word 'sceptic' (or 'skeptic' if you really must) exists, an umbrella term encompassing all those things. Atheism is simply a specialised subset of that, dedicated to one subject.
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.'
