No Country For Old Men Ending

I am split on the ending of No Country For Old Men. While it's the perfect conclusion to it's themes of morality, justice and changing of times; narratively it subverts all expectations of the western and thriller genres, as it denies the audience any of the resolution, closure and satisfaction any similar films that use genre tropes, such as a shootout, the case being solved, or in general, good prevailing over evil. The reason why this is such a good conclusion to the film thematically, is while there are characters who are closer to good than bad (Sheriff Ed Tom Bell), and vice versa (Anton Chigurh), the majority of the characters fall into a grey area, for example, the protagonist of the film, Llewelyn Moss. It would not make sense thematically to see such a conclusive ending, such as a shootout, when there is no clear distinction between "good" or "evil", every character falls somewhere in the middle. In fact, we see the character of Sheriff Bell, who is the closest thing the film has to a traditional "hero", ends the film by giving up and retiring, he says he feels "overmatched" showing a trait that is completely unheroic. In fact, the first character to challenge Chigurh in the film is Carla Jean, who fits the traditional "damsel in distress" archetype; she does this by challenging Chigurh's strange logic behind who he does and doesn't kill, it is the first time he is questioned in the film, we can tell by his facial expression he is shocked, impressed by Carla Jean and even disappointed by himself, questioning his own motives up to this point. The outcome of this interaction is left ambiguous, and while it is implied that he does kill her by the way he checks his shoes after he leaves her house, it is left up to the audiences interpretation. The next scene contextualises this scene further, as after Chigurh crashes his car and is approached by two boys, it is expected by the audience for him to lash out and kill both the driver and the two boys due to his earlier temperament. In fact, he buys a shirt from one of the boys to bandage his wound, mirroring an earlier scene where Llewelyn Moss haggles with a man for his jacket after crashing, suggesting that Chigurh may be a much more grey character than we once thought, leaving the audience to further question whether or not he killed Carla Jean, as this is the first time we see any form of humanity from his character. My interpretation of this moment is that Chigurh does kill Carla Jean, and sticks to his strange sense of morality we see throughout the film, due to the way he checks his shoe being reminiscent of his earlier killings, as well as letting her live and breaking his code seeming contradictory to his character; however, I think that in this scene he does not want to kill her, and that it is painful for him, while some of his earlier killings were clearly done for his pleasure and satisfaction. Another thing that I find interesting about the ending of No Country For Old Men, due to the way it presents it's themes, as well as how it subverts genre is the final shots of Llewelyn Moss, Chigurh and Sheriff Bell. Most traditional westerns will end with the villain either shot dead in a shootout or imprisoned, while the hero will walk into the sunset. While we of course don't see the shootout itself,  the last time we see the character who we first assume to be the protagonist, Lllewelyn Moss, he is dead as a result of a shootout. In the last few scenes we see him in while he is alive, he has become overconfident, and accepted the role of the hero of the story. Due to his arrogance and toxic masculinity, he assumes, just as the audience does, that he will heroicly kill Chigurh in a shootout; he states in his final scene while alive that he will "be ready for whatever's coming for him". This overconfidence, as well as determination to kill Chigurh, instead does the opposite, and let's him keep his guard down, as well as his own, leading to the shocking reveal that he was killed offscreen. This is because he is supposedly killed by the Mexican gang he stole the money from originally, his fixation on Chigurh as the main villain of his own story that he must overcome, caused him to forget this possibility, just as the majority of the audience would have. The final shot we see of Chigurh is after he has bandaged his arm from the car crash, in which we see him walk into the sunset, like a traditional western hero, despite being undoubtedly the main villain of the film. This makes thematic sense after his interaction with Carla Jean, whether he killed her or not, this makes the audience think, or at least hope, that he will have a change of heart and move away from a life of criminality and murder. In the final scene, we see Ed Tom Bell many years later in what is presumably a retirement home. While this is not a prison, we see him in his final scene, isolated from the outside world., We saw him fail to stop Chigurh before this, and this scene furthers the point that while maybe not physically, like Llewelyn Moss, or many of Chigurh's victims, he was both mentally and emotionally broken by Chigurh. In this scene he talks about his dreams, ending the film with the final line of  "and then I woke up". While the hopefulness of Chigurh's ending is desirable, this scene questions how realistic it actually is. In reality, a violent criminal has gotten away without any punishment for his crimes, and makes us question the actual likelihood of Chigurh changing.