Hello Cocolocoii,
I think it is a little of each. To those who were NOT shown Christ-like love and understanding for the most part are victims of wolves in sheeps clothing. This in turn can and will cause bitterness. On the other hand our own faillings can blind us to the point of percieving ourselves as victims and this can and will cause bitterness. There is no easy way to cope with such intense feelings. All roads to recovery start with us taking the first step however.
There are times when simple forgiveness can relieve a lifetime of bitterness. Recovery from acute bitterness may be as complex as the reasons for the bitterness, but it may also be as simple as three spoken words: “I forgive you.”
31Get rid of all bitterness, rage, anger, harsh words, and slander, as well as all types of malicious behavior. 32Instead, be kind to each other, tenderhearted, forgiving one another, just as God through Christ has forgiven you.
Ephesians 4:31 NLT
As to JW and ex-JW's being victims of the org., I firmly believe that their day is coming. Weather for good or for bad there will be a reckoning, a day of justice.
1But there were also false prophets in Israel, just as there will be false teachers among you. They will cleverly teach their destructive heresies about God and even turn against their Master who bought them. Theirs will be a swift and terrible end. 2Many will follow their evil teaching and shameful immorality. And because of them, Christ and his true way will be slandered. 3In their greed they will make up clever lies to get hold of your money. But God condemned them long ago, and their destruction is on the way.
2 Peter 2: 1-3 NLT
I believe God promises us a bright future. It's not easy licking our wounds, so to speak, but I have more hope for tomorrow than I have regret for the past. Anyway, hope this makes sense.
CornerStone