I think perhaps your comment that people somehow need JW spiritual food to be true to god is untrue. There are certainly a number of very devout Christians on this board and others who remain unreligious but profess a strong personal relationship with God. However, quite a few of them do not feel they need to go around making a showy display of their faith the way many JWs do. Since a lot of the non believers are a more vocal majority here I can see where you might get the impression that no one here still believes in God. I would also submit that were you to go to another message board on the internet (save one dedicated to christianity) you would find essentially the same thing, this is not a feature unique to ex-JW boards by far. However, religion is often discussed here in more detail since we hold it as a common background.
I think what you are also not giving credit to in the time you have been here are the people who have genuine concern for others. Unlike how JWs painted apostates to me as uncaring, uncompassionate individuals. And yes I agree there are extremes on both sides, but to say everyone is one extreme or another is also unreasonable.
As for the thread of what is the most important thing in their life. I found that a lot of JWs would SAY that god was the most important thing but their actions revealed their true motivations. Again not saying this is true for every JW but it was certainly true for some. You have to remember also that boards like this do tend to draw more of the skeptic audience and can't be seen as a representative demographic of all JWs.
As for the thread attempting to debunk the bible I see no real harm in that. If the bible is in fact true it should stand up to scrutiny. And if your faith is indeed strong it should withstand trials, right? What does it hurt to let someone else have their viewpoint as well? The problem I find is that these threads on the part of the christian boils down to you must have faith, faith by definition is unprovable and I therefore find it has no purpose in a scholarly debate. If scholarship is disturbing to you then perhaps you would be happier not reading those threads.
I also think that a differentiation needs to be made between religion and god. One can have faith and belief and a personal relationship with god without embracing organized religion. And is it so hard to believe that those hurt and wronged by a religion would be cautious about jumping out of the frying pan and into the fire?
So while I will grant you that some people are indeed bitter and resentful of the organization, not everyone deserves to be tarred with the same brush. And indeed some have a good reason for being the way they are given all the things that were cruelly done to them in the name of god and religion. Since this has apparently not been your experiences with the religion I can see how this might be somewhat hard to understand. I was told when I left the organization that that is where my true friends were. The true friends that since have not spoken to me. Whereas those horribly wordly people have been there to support me when my friends have all abandoned me. My worldy friends have given me emotional support and offered me their homes, my JW friends I am dead to. "Lord when did we see you hungry..naked..and imprisoned"