Well, if you look at the history of JW teachings, they've pretty much pushed the "no children" rule off and on. Why? I'm sure it's because children take up so much time and enegy, which time and energy should be funneled to the borg.
Although I've been out for many years, I remember thinking that I didn't want to have children. I remember seeing crying babies carted out to backrooms in the KHs to be whipped until they stopped crying (yeah, right). I remember my infant nephew even being taken out and given swats in an effort to stop him from crying and stay still. AN INFANT.
Add to that the 3 meetings a week. Good grief, getting no only yourself (and your mate) fed, showered, dressed and in the car, for 1 or 2 hour long BORING meetings during which you had to keep you infants and toddlers somehow quiet, and THEN also try to get out in service at least a couple of times a week while doing the same prep work....OMG! No thanks! To the JW, children are work that simply interfers with their worship. And, to add to all that, having to make sure you carefully indoctrinate your child in the JW teaching, which includes, of course, insuring that he have no desire to celebrate holidays, birthdays, salute the flag, bascially have NO fun and/or be no part of the world....wow...sign me up (not).
It wasn't until I was out many, many years that my desire for children surfaced. I had two beautiful children rather late in life...and now I know what life is about. And thank god, no meetings, no trying to feed them a line of BS that they cannot possibly comprehend, no trying to hold them back and keep them in a small, ignorant, stiff box.
I would have had children far, far sooner if I had not been raised a witness.