The reason why i do not do any further discussion on religious subjects, is because religious people can always pull the ignorance/i'm not listening to you card. Just because they concider anyone criticizing religion a religious bigot, and that is a fact for the most (98%) people who are religious.
And the counter arguments are oftenmost just stupid, it's undiscussable, really.

But if you really wish to see how atheists are made...
2 things will get you there fast.
Reading history of what religious people did in years around 300 to 1900's

And, simply, reading the bible(or any religious book) because nothing gets you there faster, than reading the bible with an unbiased mind.

Also i do not discuss or argue of worldviews, because of the first mention up there, i've grown to be 'meh' about everyone's beliefs. If they truly believe in something, and they do not attemp to convert you, or their beliefs of the world do not affect you in any manner, it's -not- your -fucking- problem.
If they start to affect you (we have random christians, including jehovah's witnesses coming to our doorstep, preaching their message) simply, throw them out if they do not understand when you tell them you do not want their belief.

On that note, who the fuck do they think will convert to your religion if they preach it on their doorstep? xD