
If you aren't able to work out your differences in your marriage and divorce is the agreement, let it be peace with the decision. I feel divorce it a terrible thing; it tears apart those involved. But if the marriage is causing stress, pain and aggravation, then have peace in cutting those ties and going your separate way.
No, don't attempt to make the other person's life miserable if you are no longer a significant part. Let go and move on with your life. There is a healing process that you both must go through, but don't do things to hurt the other person because you are still hurting. It takes time, but forgiveness will help you heal faster.