As a non-JW, I am only beginning to grasp the real force of what I deem to be evil triplets, shunning, no contact with worldlies, and conditional love. If you leave, you won't have any outside contacts and you will lose your family and friends; but, in the meantime, you are damned certain that you can't be sure they won't be taken away from you at any moment.
I think that the fact that true love and friendship can really develop among witnesses is a triumph of the human spirit. How sad that anyone needs to bear all this.