Interesting.
It was my faith in God that was the first to go in March of 2005, when I got sick.
As much as I knew that God most likely did not exist after that point, I still held on to the idea that I had "the truth" and somehow it was my fault for feeling the way I did.
When I "stepped down" about a year later, the reason I cited is that when I called out to God in the only true time of need I had ever had in my life, there was nothing there but a black hole.
It was in the summer of 2010 I realized "the truth" was utter bullshit. God had been gone for years by that point!