Always an unbeliever. But used to be more of a blind SJW and hence a bit regressive. All because of my ignorance, mostly due to being too busy doing other stuff.

I have learned much the past 5 years about lots and lots of stuff.

My parents were all about reading, and learning. Glad to feel it's still working.

Hi Orbit. I have been an atheist since 1973. It was first year in college, 2nd semester. I was in an introduction to philosophy class. My professor was funny, as well as being generally opposed to all religions. By the time the semester was over, I pretty well knew that I was a nonbeliever. I had been generally more religious than most of my family through late elementary and middle school. I received all the Boy Scout awards having to do with religion. But in the back of my mind, there was always things that didn't add up about Christianity. The God thing just wasnt working and my questions received unsatifactory answers. That was until that philosophy class.

I was in my teens; don't remember exactly how old, no more than 15. I remember the straw that broke the camel's back, but I"m intuitive and don't know all that contributed to the decision.

I was told that one must be baptized to go to heaven. However, an infant that dies before they are baptized goes to heaven anyway. I asked Mom what would happen to a Chinese baby whose parents had no knowledge of Xians died without being Baptized, and she said they would go to Hell.

To me that was nonsense, why would an unbaptized innocent Xian baby go to heaven and an unbaptized Chinese baby go to Hell. After this event, I judged my mother didn't really know what she was saying, and I became agnostic. That was circa 1955, and being agnostic was frightening. I didn't dare tell anyone in the family; they were all fundamentalists. As far as I knew, everyone in the US was fundamentalist.

God appeared to me in a vision and told me that he doesn't exist.

I "came out" early 2000s . A certain someone in our family became the "hardener" to my curing cement.
Until then I openly identified as agnostic from mid-20s. Wish I'd been raised non religious but paternal side had great influence, to the point of damage.

At age 13, I realized the Bible is just a book of stories written by men. I became an atheist.

I was born into a Moron (oops, Mormon) family, and was raised to be a Moron (oops, Mormon). In my late twenties, I decided to prove with facts and evidence that Joseph Smith (the founder of Mormonism) was a true prophet. The deeper I dug, the more I became convinced that he had NO divine gift of prophecy. His predictions, made in the name of God, failed to be convincingly fulfilled. So, I left Mormonism, at which time my Mormon wife took the children and disappeared. Months later, I got divorce papers in the mail. She said that she married a Moron (oops, Mormon), and that I was no longer the same person that she married.

Having left Moronism (oops, Mormonism), I investigated other Christian religions. A few years later, I put the bibilical prophets to the same test I applied to Joseph Smith. They, too, proved to be false prophets, with NO divine gift of prophecy. I also compiled a lengthy list of biblical contradictions and absurdities. Christians tried their best to convince me through conversation and books on apologetics, but every time, I found their "logic" to be flawed. I recall my very last prayer, telling God that if he exists, he's going to have to prove it to me. Otherwise, I will follow the facts and evidence pointing to the conclusion that he is nothing but a MYTH. I was not struck by lightning, and I took that as my final proof that there is no god, and that religion is a scam based on mythology. I am happy to be free from such deception.

Debilitating chronic pain, disability, shame, social ostracism, depression, abject hopelessness, mental breakdown, suicide attempt, cessation of psychotropic meds, learning to cope...

My grasping for meaning--for something "larger than myself"--didn't save me from falling into a blackhole. It didn't pull me out. It didn't seem to do much for me at all, except keep me guessing, and feeling like a piece was missing. I no longer feel the need to have that empty space in my life: I have all the authority over myself. I'm much happier with this.

I remember when I was very young, maybe 6 years old. I was told to pray to god. I asked him to show himself to me or talk to me. He didn't. End of the story, so far.
I don't know if this really counts, because I didn't really believe it to begin with, but was only open to the possibility. So not a deconversion story, but a failed conversion story.

I haven't got one.

As far as I can remember I have never believed in any gods or the supernatural. Even as a child I couldn't buy into the stories of magic that just didn't make sense.

i left when the BS finaly filled my bucket