JWs don't understand Grace and they diminish the role of Jesus to the point it vanishes.
I don't attend church any more. Not that I think the churches are wrong, I just don't need it. One thing I see that many ex-JW's need to understand is that (contrary to what they've been taught) there is little disunity among the Christian churches. Most Christians see each other as fellow believers. The differences between churches mainly concern church governance, not doctrine.