Path,
That is an excellent question/survey to post. There were many positive aspects of active JW membership.
I believe that a big part of the appeal when one is active is the sense of belonging to a peer group with an ostensibly noble purpose, and self-validation (and for some, self-righteousness).
I genuinely enjoyed the field ministry, giving talks (including public talks), conducting Bible studies (including cong book study), teaching public speaking as a Theocratic School conductor, and opportunities to provide moral support to those who faced various problems in their lives. Those represented opportunities to give to others what I viewed as valuable at the time (and much of it was), and hence the joy that comes from properly motivated and unselfish giving. Of course, because I did not view most of those activities as optional, and because they were often not balanced with other necessary aspects of my personal life, they extracted a price that, in retrospect, was not always commensurate.
For that reason, I really don't miss those activities that I enjoyed. I have begun to learn how to continue meaningful giving to others and to recognize those opportunities with all people I come into contact with, not just a select group. I am glad to say that I also now feel much better about making a priority of giving to and supporting family members, instead of feeling conflicted about having to "beg off" from some congregational activity to do so.
As Frenchy has so elegantly stated before, I believe that forums (especially this one) can provide an excellent way to continue to reach out with love and support to others. In my mind, our dear brothers and sisters who are dealing with the painful fallout of the negative aspects of JW membership certainly qualify as those especially worthy of our support, as we should also be more capable of empathy and understanding than most, in view of the common experience.