I ask since when I walked away from them I decided that nothing that they do from that point on matters to me, unless it is in relationship with my still in JW family, and my dealings with them. I wonder how does that make a difference in the people who do follow up.
That's cool scratchme1010 - but you still cared enough to comment.
Allow me to answer - even though you did not direct your good question at me: I am interested in the growth and retention of organized religions in general - not just JWs. It is a reflection of my undergraduate and postgraduate studies in Sociology. There is an amazing wealth of research and information on the 'life cycle' of religious groups dating back to the time of Emile Durkheim (one of the so-called founding 'fathers' of Sociology). A classic case is the Christadelphians who were once a thriving religious community with a significant preaching outreach initiative that saw them spring up in far flung places such as Scandanavian countries and New Zealand (my home country). In more recent decades, that religious group has bled members so that, in New Zealand, they have lost thousands and are now a virtually stagnant group. Does it matter? Why do I take such an interest? Great questions which could be asked of any social inquiry.
Of course, because of my background I am particularly interested in the numerical "health" of JWs. Most relevantly, JWs once touted themselves as the fastest growing religion in the world, they promoted their growth as evidence of 'having the truth' and 'Jehovah's blessing'. So now that there is evidence of decline (there were more JWs active in New Zealand in 2011 than last year, by the way), it is of interest to see what, if anything JW organization says about it and curious minds wonder what contributed to the so-called fastest growing religion in the world experiencing a downturn in the West. From another point of view it highlights how religions who worship numbers (e.g., we're the fastest, biggest, most impressive, yadda yadda yadda) need to re-think their rationale when a reversal sets in. And this is where the really exciting work lies for those interested in the life cycle of religious groups. I was not alone as a JW in arguing with householders that, while the churches of Christendom were in decline, our group was the exact opposite. Oops.
It's perfectly understandable that you limit your interest to what impacts on your still-in family. But for those of us with a wider interest in the way in which religious groups prosper and/or stagnate, there is rich material for mining in JW organization - but as noted above, not just in that organization.