When I left JWs my first question was if not them, then who? was there a "true" religion out there that I had no knowledge about?
so I went to the library and one of the first books I read was who wrote the bible. I figured starting at the beginning would help.
what I found shocked me to some degree... because they showed me things which had always bothered my as a JW but which I had never received a satisfactory answer. I also read books about Cults and psychology and saw that the bible contained a lot of mental manipulation techniques including what were similar to hypnotic inductions... I saw that the god of the bible was playing mind games with his followers and could not be the loving just and merciful fantasy god that I had come to accept....
for the first time I read books by atheists and agnostics and humanists and found they had a far greater degree of rationality and sense on their side then anything I had found by religious people who made a lot of excuses for their lack of evidence.
most shocking of all was the case against Jesus being a real person...I found the more one looked for the historical Jesus the more one found nothing but legends myths rumors and hearsay... that no living Jesus can be found in history nor was one required for history to be what we know today.
Just like the Mormons do not require golden plates to be real to have their book of mormon
christians do not require a real Jesus to have their faith and fervor.