This is good advice, but is there a point where people can cross a line? After all, we doubt that if Chigurh stood up and said he was sorry, Bell would suddenly see him as a paragon of moral virtue.

This conversation between Chigurh and a drug lord isn't actually about old people; it's about the people who used to do this job. And by "other things," Chigurh probably means death. But these same phrases could apply to old wrinkly folks, too. They've died or given up. Either way, they have moved on.

This is one of those socially annoying ways of saying "you look tired." Bell is old and tired, though, so it's an accurate assessment. As stressful as his job is, he probably looks much older than he actually is right now.