Your questions are what lead me to walk away. My son has always been a gentle soul and is a beautiful young man. He married his childhood friend and sweetheart, a JW with terminal cancer. Things ended badly, as one might expect. He was deeply hurt and acted out. The elders kicked him to the curb and DF'd him. I couldn't shun him; I wouldn't.
I began to reason, if I was going to live forever in a paradise earth without my husband and daughter who walked away and my son who was DF'd, wouldn't Jehovah have to erase them from my memory? If I didn't remember I had been a wife and a mother, who would that be in paradise? Certainly not me. I chose life here and now with my family over a doctrine that made no sense to me. Best choice ever-- the only one if you love your family more than a fairy tale.