Atheists do have reasons why they became atheists.
True in my case at least. I was not yet a teenager when I thought why would one God allow so many religions to exist? They couldn't all be right since they were so different. I couldn't believe a loving God would allow someone to be sent to hell because they were born into the wrong religion and never learned about the 'right' one. The only logical conclusion, at least to me, was that they were ALL wrong. Since that day, I've never found a reason to change my mind. .
I remember thinking the same thing. All gods and all religions say theirs is the only one, the only way so, what it finally comes down to is either you are indoctrinated buy your parents or you find the religion that serves your needs. Before that can happen though, you must start with the basic belief in an invisible super being.
And that's as far as I could go. No matter how much I went to church or Sunday school, I could not get past that. I really remember, as a child, Sunday school in the church basement. Little cut outs of various characters, including Jesus and god. It was always cold down there, always the strong smell of mimeograph ink (anyone else remember that smell? Or the clunky machine that made the copies?). A middle aged woman in a flowery dress and silly hat, preaching and sticking the paper cut outs on a felt covered board. I was about 12 when I decided I was done with that.
Later, college course in comparative religions made it all the more obvious that none of them held any attraction to me and I still couldn't wrap my head around the whole invisible flying sky fairy thing.
Through the years, I've come to hate the innate divisive nature of religion as well as the really toxic and cruel beliefs held by christians - that they can do anything, commit any crime but if they ask forgiveness, all is forgiven and they can just go out and do it all again. Compare that to the belief that if a baby dies with out having been baptized, god will burn them in hell forever. Same with decent adults. You can spend your life doing good works but, according to chrisitans, if you don't takegodasyourpersonalsavior, you'll burn in hell forever.
Serious question: WHY would anyone worship THAT??? Even ISIS lets the torture end with death. How is the christian god "merciful"?
Nowadays, fundies have turned christianity into the giant hate group I believe it has always been. There is little similarity between what Jesus supposedly taught and the way christians believe.
Sorry to have written so much. I believe that being atheist is the natural state of human beings. That's they we are born. Believing in any of the gods or religions must be a very difficult thing indeed.