We have some similarities in our stories. It sounds like you are on a healthy track to me. I totally agree with you when you say:
"From my point of view the most liberating aspect of the divorce is I no longer need to justify decisions I make. The only person I can experience reproach from is me. The consequences of decisions are mine and mine alone. I find being beholding only to myself to be rather relaxing. I am more at ease and happier than I have been in a long time. After all I get along with myself quite well."
That has probably been the one of the most positive benefits of my divorce.
My condolences on the loss of your mother and I can empathize with the grief having recently lost my father. I can only hope that like most losses, as time goes on the grieving gets easier.