Garfield, hello.
I am like you a never been JW. My wife was the one raise in it. She left it when she was 18. Her stepfather, mother and 2 of her 1/2 sisters are to put it bluntly, dead to us now. She has quite a family outside the cult but they have always been kept from her and the jw's lied about how horrible I am as well as their daughter. It is so hard to connect with her family so we have a long distant relationship.
You are not right about the jw'ness not leaving a person, it can. I would have said the same thing a year ago. But, I can say that it is in fact gone from my wife. (I AM SO HAPPY!) I really think that when she saw how petty her family is in action to me she lost all respect for them. She saw how hateful they are to me, not just to her. It is one thing when jw's are mean to the one that is shunned. That shunned one has been conditioned to accept that kind of behavior as normal. When it spills over to people that they love and that have no reason to be hated, exjw's realize that this cannot be accepted and they are free in mind. They no longer accept hate as love. The best thing that I ever did was set clear boundaries with the cult. Over time when we had our first baby the jw's became our new best friend. They just slipped into our lives and slowly blurred those boundaries. When they (boundaries) went back up this year I was threatened, screamed at, and called every name in the book. They looked me right in the eye and lied to my face. They lied about me, about my wife, and even lied to my children about us. They are sick people.
I have heard here that 30 is an age that people cut ties. The reason IMO is babies become children. We see ourselves and we have an opportunity to shield them from what we endure. We break the cycle of abuse. Yes, the prophesy scares are still there but they are no longer all there is to life. I have a little boy and a little girl. I swear that my kids are like little angels. They are all the hope I need to have faith that everything is going to be OK. Even animals protect their young from danger. And the Jehovah Witnesses are dangerous.
I would recommend that you study the principles of brainwashing, propaganda, and mind control. Even a relationship can be a "cult" relationship. Learning how and why some people are compelled to control will benefit you in every aspect of your life. You can learn how and why the need for control is self defeating when it is projected to others. The key is to turn that yearning for power inward, use it to understand what you need, want, and who you are.
There are so few JW's and their doctrine is ludicrous that they alone are not perceived as a great threat to the general public. But all controling "cult" groups and authoritarian groups are. It might be worth your time.
Hope I did not babble to long.