Here, here!

Great observation on life, for us and them.

Those who adapt, survive. Those who learn to bend can endure the wind until it changes.
After reading your postings, welshwitch and tpe, it seems to me that in some way, though Jack died with his poor body broken there by the roadside, his spirit was even then resilient. It was Ennis who was perhaps the more broken in the end, body intact but spirit horribly wounded; learning to bend only after Jack was taken from him - when he starts to understand "the rest". May be completely off the mark with that, but you've both given me much to muse on ... as usual. Thank you!
MississaugaRed, I do think you are on the mark. Ennis, in the end, is both saved and cursed by the love he shared with Jack. He came in wounded, to be sure, but he let it fester for 20 years until it was too late to attain any semblance of a fix.
Jack's spirit may have been broken by Ennis's refusal to share a life with him, and he dies never fully knowing that Ennis did love him deeply. This is his great tragedy.
For Ennis, it is ironic that, indeed, he will never know the rest. At this point, it is no longer limited to the notion of Jack's infidelities. It becomes an ironic commentary to Ennis never fully knowing the joy of love selflessly and wholeheartedly shared. This is his great tragedy.
Indeed, he shall never know the rest.