Yes, my adult children have voiced similar sentiments to me. I think, in some ways, it was harder for them because they never saw my ex and me fighting, in fact what they saw was a mostly excellent marriage of 24 years. We were the family that took great trips together, where the parents were still affectionate with each other after all those years, where interesting discussions were had around the family dinner table, and interesting friends came over for informal dinner parties.
I think they feel that, if a marriage THAT good could still fall apart, what hope is there? And I admit I don't have a great answer for them, as I can't explain myself what drove my ex to be unsatisfied and unfaithful, and willing to inflict the same pain on his children that his WAW mother inflicted on him. I've offered MLC and brain damage (he had multiple concussions) as excuses for his behavior, but the kids aren't buying it. The best I can do is model a successful happy life after divorce.