I read here an splendid post by buckskinsbronc that,I don't know why,has been deleted...

In it you give two examples of people who could be bordering the self destruction or,at least,taking some risks in their lives.I agree in that these two attitudes can be very similar sometimes,but in this case I think it's not comparison; this old cowboy was a fighter for something he believed in,this kind of persons who makes the world move.Of course,he knew perfectly well that he was running some danger,and that could include his own death; but it's far from being a self destruction attitude,at least in a willing and aware position.
As regards to Tony and Maria,from "West Side Story"-wonderful movie,by the way; it's the one I have watched more times,along with BBM

-,they took some risks by having a relationship in their so aggressive and conflictive environment; but,yes,it was only when Tony thought he had lost his love that he had a clearly self destructive position.Why?Because,simply,he had no reason to keep on living.
In the same way,I think Jack was taking some risks during all his life because he believes that what he did was right; like the old cowboy,he was somehow the kind of person who makes the world move also.Because only these ones who fight for changing an unfair situation gets to make the world,their life and the other's better(or at least,more comprehensive and tolerant).If everybody had been like Ennis,would we be talking about gay rights improvement? I honestly believe we wouldn't.
But in the last years of his life,Jack felt like Tony somehow; he was loosing his love,not in a complete way,but he was seeing that his sweet life ideal was vanishing.He had a love every time more and more runaway,more and more closed in his fears and denials...He was loosing one of the two only persons who had given him love,but in Ennis case,not the kind of love and in the way he needed.Maybe,then,he didn't took his life in an active way,but there're a lot of ways to get something in a more passive one,don't you believe?.