NewChap - I could have written almost the same thing regarding my journey.
I think the steps were roughly as follows:
1- Jehovahs' Witnesses were wrong.
2- Investigated a few churches and saw the same mindset/attitudes/worldviews.
3- Investigated the Bible and found it full of inconsistencies/fallacies/mythological magic.
4- Looked at religion in general and saw the same.
5- Began a serious look at the god concept[s] and found them wanting.
6- Looked at science and found it was sufficient to explain Homo-sapiens, our earth, the physics that control and create it.
It took a couple of years after that before I was comfortable with the 'Atheist' moniker, but eventually saw the need to call a spade a spade.
One point in your initial post caught my eye.
Then I paid attention to how believers expressed themselves. I saw with everyone of them a kind of denial to evidence---a certain amount of acrobatics their brains did to force everything to fit into their belief systems. It was uncomfortable to watch and continues to be.
Just last week, I was excited to hear and read about the news of the confirmation of the Higgs Boson from data extrapolated from the Large Hadron Collider. One nice Christian lady whom I know, reacted by saying "Well as a Christian I cant believe any of THAT!" This in spite of the fact that I am sure she didn't understand a word of it - but the application of the term 'God Particle' by some news articles repelled her to not ever TRY and understand that this could be one of the most significant discoveries in decades. The whole experience took me back instantly to a time when everyone around me was just as willingly ignorant.
This realization a few years back made it clear to me that ALL religion and the very concept of God combine to work against progress for our species and the planet and civilization in general.
Jeff