I can’t say that I am entirely a “former” Christian. I doubt the veracity of much of the New Testament as it exists today in its adulterated form to an extent that there is likely no place for me to go to within reason. I think, however, that there may be some grains of unadulterated importance left; it’s just a matter of finding them.
But my intellectual decoupling from dogma started after reading the Book of Jubilees and wanting to understand the history behind it because it is filled with horrific religiously motivated brutality of the sort seen in the region in modern times, and stumbling on works of Bart Erhman and others in the process of reviewing the history of Judaism from more objective sources. It took many months of study to understand how little adherents understand about their own written word or how much weight any particular story in the writings deserves. As far as I have come on my journey, I can say that I am not willing to flush it all down the crapper, but rather leave it as a mystery of unknown value.