Acutally, when I first started lurking here I thought to myself that "some of these people need to let go and move on with their lives." But as I got more involved in reading posts and the responses, I feel this is not the case. Some who are still in read this board. Some who post here are still in. Others, who have left, may have certain feelings or thoughts, and may wonder if they're the only one who feels/thinks that way; this board serves as as support group. Also, many of the postings help all readers to refute WT teachings and practices, which can be very helpful to those being pressured by active JW spouses and families.
Just lurking on this board, a couple of years ago, helped me firm up my decision never to go back to the organization.