Bertrand Earlier on in this thread, on the first page, it was suggested people's reasons for being atheist were more 'rational' than people's reasons for being theist. Later, Jassy, remarked upon atheism being 'passive'. I just find the two, rational and passive, difficult to reconcile together. Rationality, surely requires a rational, reasoned, thought process, does it not?
Not all atheists come from the same background or along the same path.
To a certain extent everyone is atheist unless they believe in every god/deity.
Assuming you are a Christian your atheism towards some gods is passive, you have not actually thought about whether Neptune exists, or Ganesh. It just doesn't enter our head to ponder whether they exist. That is passive atheism.
Alongside that there are people who have a background in a faith or faiths and have come to the conclusion it is illogical / false / whatever. That atheism is more active, it is a looking at scripture and the workings of their faith and then coming to the conclusion they are wrong.