You gotta feel sorry for Jack, because even his last wishes could not be respected. He wanted his ashes scattered on brokeback. I respected Lureen for telling Ennis that he should get in touch with Jack's parents to carry out his wishes. Her life with Jack certainly turned out differently than she thought it would. I think she still felt some affection for Jack. And Ennis sure tried to 'do right by Jack'. If only John Twist didn't hate his son so much.
Even in death, Jack could not get what he wished for
I agree... all the good points you made are definitely sad. It is horrifying that Jack's own Dad won't let his final explicit wishes be carried out.
But it goes even further. It's
only "in death," Jack finally was able to communicate the depths of his love to Ennis (they' re the signals that open Ennis's eyes permanently and completely to what his situation really has been for 20 years), and it's
only "in death" Jack finally got the commitment from Ennis that he wanted and deserved (the "Jack, I swear..." moment). Oh, that all of this had to come too late! All that Ennis does for him following his death would have stunned a living Jack. I mean, Jack couldn't drag Ennis kicking and screaming up to Lightning Flat while he was alive... but once he's dead, Ennis is anxious and determined to go on his own.
So, it's
only in death that Jack truly gets what he wished for. All of which is sad and tragic on an epic level.