Sadly, witnesses adopting children does not really reflect love in many cases. Nor is their primary reason always the chance to convert someone to the "truth." In Florida at least, they are paid to adopt certain categories of children, and by adopting they have a better chance of keeping the child as opposed to just being paid foster parents. The pay is the same as adoptive parents and they have much more control. Still, I would never allow my child in a kingdom hall if I had it to do again. I stopped going but allowed my child to spend time with relatives who were witnesses. If I had stayed in California, and never allowed my child to associate wtih witness relatives, I would still have a daughter. Tough choice, keep your child away from your extended family to protect your immediate family. Sad. Typical of witnesses with whom no relationship can be taken for granted but very, very sad. Even sadder when you lose a child as I have, to this cult. Nothing "deeper" just told that I was threatening her faith. What a fragile faith they have.
To me, Waiting's answer gives the defining proof (as it so often does) of why witnesses should NOT be allowed to adopt. How much clearer do you want it? As for JW views on shunning, well, it is all documented, if you really want to see the writing say so. What would impress me more if I were you are all the good people taking time to talk to you about their own experiences, family they have lost. You are able to talk here because of that experience if I am not mistaken, Simon's family turned on him if I remember correctly.
"Experience is a hard school, but a fool will have no other." Heed that adage and learn in an easier school. Jehovah's witesses are a cult, a foul cult, and as my brother says, they have gone through my family like a plague.