I left the Church of Scientology on 2009-08-07.
See my detailed write-up on why.
It boils down to personal integrity. I could no longer be part of an organization where the management is lying, harassing and suppressing the free will of its members.
My old Scientology blog has detailed accounts covering my experiences in the Church of Scientology and the first year after I left.
Then, in May 2013, I compiled all the Scientology-related posts from this blog into the book called “From Independent Scientologist to just me”. Get it at Scribd.com. Or download it right here (291 pages, 5.4 MB).
Here is J. Swift interviewing me on many aspects of Scientology: