What made you become an atheist?

[BrianSoddingBoru4]

You don't "become". Humans are not cartoon Transformers. 

The better way of putting it would be, "What caused you to leave your prior position?".

Humans are always human, we don't magically "become" anything. Humans simply think about things, and change their minds. 

One can eat at a restaurant, and over time get tired of the food. But because you may like that food for a while, does not make you the restaurant itself. It is just the joint you currently like eating at.

What caused me to leave my prior "on" position, regarding god claims?

Specifically the food joint I used to eat at was "Catholic". But one day, working as a laborer at a construction site building homes, a carpenter(ironically) asked me "What if Jesus was just a man?".  That was a long time ago, and I now severely question that such a character existed at all, even just as a man. 

I didn't leave the food joint on the spot. Prior I always found something amiss with the fantastic claims made in the bible and by the Preacher in church, but was too afraid at the time to question. I was more concerned prior, to fitting in and wanting to belong. But something in the way that guy asked me that sparked my inner skepticism. 

It was not an on the spot, "I was wrong". It actually took me almost a decade from that question, to finally saying, "I don't need to eat at any theist food joint, I am now in the "off" position.

FYI, the word "agnostic' was a horribly cobbled together word by Thomas Huxley.  It basically means, "fence sitter" which is misleading. 

"A" in the ancient Greek prefix means "without", and "gnostic" or "gnosis" means "to know". So the word "agnostic" means without knowledge.

The problem with that word, is that it is meaningless until applied to a position. It is falsely used as a stand alone word, when it does not, by itself tell you what you are without knowledge of.

The other thing Huxley didn't take into account, were past claims, current claims, and future possibilities. 

You can look at god vs no god, as like a dimmer switch on a light, either way. You can be more certain, "BRIGHT" in your position, or dimmer "not sure" but lean one way or the other. But there is really only on and off ultimately.

For example. I am CURRENTLY "off" on all past and current claims of god/s so far. I am "technically" "agnostic" about the future, although I still see the god of the gaps answering anything fleetingly unlikely.

It is possible to hold a theist position , say a certain Muslim, or a certain Christian, or a certain Jew. But you can also hold  an agnostic theist position , which is someone who is "on" on god claims, but not certain as to what it's makeup is. 

One can also hold an "agnostic atheist" position. Meaning one can current be "off" but accept the future is not written in stone. 

But I do regardless of position, hate the words "convert, deconvert, and become". The positions humans hold, are merely what they are sold by others, but we are not caterpillars morphing into butterflies. Our labels as a species are mere positions, not our physical DNA.

You seemed to veer from the topic at hand.

Get used to it.

Boru