Combination of things I guess.
To kill time at work.
To express myself, as its therapeutic. I figure why bother paying a specialist co-pay with a therapist, when I can do it for free with you guys/gals.
To let lurkers know that there are other people having the same doubts and jacked up circumstances they've have.
I think some JWs have an unreasonable view of people in positions, such as elders, or circuit overseers. As an elder posting here, I try to be as honest about myself as my situation will allow at this time. I want people to know we're human, we have our weaknesses and strengths. Many of us have doubts that the people in our own congregations would never have suspected. When I was lurking, there was a CO who went by Winston Churchill posting here. I was flabbergasted to see him posting.
One last thing, my life is in a quagmire or stalemate at this time. I'm at a transitional phase in life. There's going to be consequences regardless of what decision I make in regards to my future with or without this organization. I don't 100% blame myself nor my parents for this situation I'm in. Sure they bear some fault, as do I. The men who bear the most fault however, are dead. I'm not capable of physically hurting them because they're deceased. At the same time I can't, and we can't, reasonably eliminate this jacked up religion, but at the least by posting here we can chip away at some of the control they have. We can expose their flawed doctrines, and let others know there is life outside of the cult. Or even life within the cult for those strong minded and resilient enough.