I never really believed!
Not sure I ever *really* believed, deep down. But I was raised in the church and went along with it most of my life, with a sizable period of inactivity (and not serving a mission). But it was 2006 when I came to the conclusion that the adam and eve story was false. (Some years before that I had rejected the literal flood account.)
I went back and forth putting this knowledge "on the shelf" versus putting the church there instead until a few months ago, when I'd had enough. Knowing the church wasn't true but thinking the leaders were sincere and really believed it, I started looking into the life of Joseph Smith and the early days of the church, trying to understand where Joseph went so wrong. From this I concluded that even if I believed in a divine creator of humanity (which I didn't), I still wouldn't believe in the church. And I think at least some of the GAs know enough to at least think the church is likely not what it claims to be.
So... 2006 was the main point where I stopped believing in the church, cemented in 2010 (which is also when I told DW), still haven't told my parents and siblings, maybe 2011.
Oh gosh! speaking of garments, the first time I took mine off was to garden, and guess who showed up while I was in my cool, sleeveless top! My husbands great aunt and uncle, who took us through the temple to get our endowments and marry.
It was so weird because they NEVER came to visit in the past! How did they know?!
Oh well, his aunt lectured us and told us we could never take her testimony away, (we had not tried, honestly!) sigh. that was about 5 years ago when we went from being their sweethearts to the very naughty apostates.
Let's see. The first inclination that this all was a bunch of shit was when I was probably 5-7 years old and I was told I wouldn't be able to see my family members if they went to a different "kingdom" than myself. I literally left church and cried in the parking lot next to the family mini van. I was always a skeptic. I was constantly asking questions and starting debates since I was a kid. It got to the point that my mom would just send me out of the room when missionaries and visiting teachers came over (hags).
I officially stopped going to church in High School when my mom couldn't make me go anymore, and that was 1997ish. I have been high on caffeine and sex ever since.
I was raised Mormon, and from very early on something about the whole set up just seemed wrong. I never felt good after going to church or thinking about church, and that was not the way I felt church was supposed to be. It was probably the early 80's when I knew that this was not something I could continue to believe in, if I ever believed at all. It was more being raised in the church and being terrified on a weekly basis. It still bothers me to think about it, even 30 years later. That kind of brainwashing runs deep.