If you care about the "Truth", it takes time, but eventually you leave or you compromise your conscience.
I had a rather bendy conscience and tried for the longest time to reason my way around the organization's deficiencies.
Then I took a look at the morality of "Jehovah" or any deity that created this world and the arguments for tolerating evil all seemed to be a horrible little bar-bet between two powerful beings who really didn't have the same level of morality as the creation.
The creation was MORE MORAL.
That was when I knew that was it.
I can't be anything but an agnostic now.
I still wish the earth was going to be a paradise.
I still wish all the tears from every eye was going to be wiped out.
But I don't think that will ever happen.
I think it's just the grave along with all the others who thought similar thoughts, but lacked the pen and paper and historical posterity to record the morbidity of their thoughts.
I'm almost hoping that some still believe their fiction, because if they do, at least for the moment they have hope.