Great question. Thank you for asking it. I've wondered the same about myself. For a long time I avoided sites like these. I wasn't ready to question theory. The behaviour part had already freed me.
But when I left, and when I was df'd, I lost my spirituality. I lost everything within me that I thought I believed in. I lost my relationship with god. I haven't yet been able to try and find it again. I've simply put that part of me aside. So for me, it helps to take apart the JW teachings, as lady Lee says, to deprogram myself and clear my mind. To reinforce that what I was brought up to believe was wrong. It's a protection, I guess, in a way. My children don't have the depth of knowledge I have, and I fear for them when they are pressured by my mother. So anything I can learn to add to the reprogramming helps. I'm to blame, of course. I taught them all this stuff in the first place.
I do understand why some feel they have to keep going to meetings...it's very hard to make that final, complete break. This is a high power high control cult. Incredibly powerful.
I always used to say that I would leave the "truth" for many reasons - but apostasy would never be one of them. I loved the bible, I loved what I believed. I researched everything, I read everything. When the elders told me the Organization book said one thing, I knew they were lying, because I had read it in great detail along with the references. I was like Blondie.
So it helps to have people like Blondie point out the inconsistencies. And it helps me to read them for myself. I need to know what is in that latest magazine to protect myself and my children.
Gee...just saying that, I realize how vulnerable I feel sometimes.