No, you are not alone. It's been about 1 year now since the final separation and a few months later, the divorce. I am just now feeling mostly normal again.
I don't think it matters how long it takes, or how bad things were, or how justified a divorce is...it is still a loss and one must go through the grieving process nonetheless.
Good news is - it gets better! Life gets fun again! And lessons are learned to be filed away for the next adventure.
Be easy on yourself.
Peace,
~T