To answer the subject question of what shunning did to me, I can say that it made me come back.
I just couldn't stand the treatment as if I was dead by my whole family. It was horrible to me!
One my siblings walked away from the WBTS, not df'd or da'd just became involved in other acitivities so much that there was hardly any time for the JW stuff, and for a while was given the same 'as dead' treatment. However, this sibling was stronger emotionally than I ever was. She moved away and built her whole life all over again, finished her graduate education, got a new set of friends according to her studies and interests and now travels all over the world.
It took some 5 years or so, but my family finally came around and started seeking her out. Now she's the one that limits them. Things are done her way, and when she visits they all treat her so nice and never bring up WBTS stuff. She proved them all wrong about the JW mentality that she'd be doomed to unhappiness and that her life would be trash for leaving Jehovah.
You go Sis!!! I should've held on to my resolve, but my love for them was stronger at the time. Perhaps in the near future I'll get that chance again.
DY