Why do people think something had to happened to me to make me an atheist? The only thing that happened was that I woke up!
I was an atheist just naturally. As soon as I became aware people think there is a god, and I knew what they meant, I disbelieved. At one point I began to attend church and I tried to be a believer, because I wanted what those people claimed to have. But I quickly saw they also didn't have what I didn't have and it didn't take.
Living in the bible belt, I get that question quite a bit. Luckily I had enough religious exposure to answer their questions honestly. One friend of mine, when told that I was not a churchgoer, said to me, "Well, you do believe in god don't you?" Her next comment to my answer was, ".....but you have three children!" Talk about a deer in headlights, I was speechless, especially knowing that she was a nurse by profession. What am I missing here?
Likely because the faith is all they know, so anyone who claims to live without it is unheard of to them. We're a reminder that it is possible to live without religion. A christian family member of mine said "I don't understand how anyone can live life without believing in something greater than themselves" for instance. They assume there is something out there because they personally want there to be something more.
It is beyond their belief that anyone could deny god and still be a good person.They never can answer the question about bad christians except to say they will go to hell and so will you! These people deny logic and proofs. They maintain to ask for proof is somehow a sin in and of itself. Besides it negates the need for faith! They do not acknowledge free will that is without a god of some kind. However all those other faiths besides christians are also going to hell.