Personally, the Watchtower rhetoric contributed to my decision not to have children some before I left. But now I still don't have the desire. Some might blame the Watchtower for taken the desire out of me. But I have never had the desire, don't have the desire now, and I don't ever anticipate having the desire. Parenting is the most important job a person can do, and I just don't want to do the work.
I have the exact same sentiments. Maybe growing up as a JW subconsciencly affected my desire for children, maybe not. But even as a kid, I could see that a lot of parents were not happy having children. I could see that their life was put on hold because they had to dedicate everything to raising this child. I could see the tiredness and frustration. I heard the complaints and the stories of unfulfilled dreams. I knew at an early age that I did not want to go through that. I think the WTS knew that children distracted people from being "whole-souled"(read under complete control) in their service to Jehovah(read the organization). That's why they admonished everyone to not have children.
I remember that talk at the DC sometime in the 80s. I remember a lot of the friends were upset by it. I didn't complain though. It made sense to me. I bought into the whole scenerio. If you know Armaggedon is coming and that terrible persecution is coming, why in the world would you want to bring a child into the picture? I remember people complaining about how the Society doesn't have the right to dictate if we should have children or not and I would always agree with the Society saying, "Could you watch as your child is taken away from you? Could you stand to watch your child beaten or even killed?". Looking back, I see that I bought into the whole doomsday thing, only to realize many years later how wrong it was and how damaging this was to many people in more ways than just deciding to have kids or not.