"You built your own hell, brick by stinking brick" I do not know why this line stands out to me. While you are here in a world of friends, feelings, thoughts, hopes, life and love - he has shut himself out of that, has raised walls around him to shut himself in, in a world of loneliness, bitter, without happiness. Be happy to be outside. It seems he won't share the smallest possible space, not even mutual understanding. So - from this very, very far away - I am sure he won't regret what you could have been to him, only perhaps what he wanted you to be. You have given that man a last chance at being your father. Peace be with you. I feel deeply honoured to read your goodbye. And moved.