Compared with younger adults, older adults who divorce suffer less from a sense of personal failure. find it easier to separate their identity from that of their former spouse. are less likely to spend their remaining years living alone. seldom express regret over leaving an unhappy marriage.

Compared with younger adults, older adults who divorce seldom express regret over leaving an unhappy marriage.
When you're living with a single person for the most of your life, you will make a lot of emotional investment into that relationship which make them regret even for leaving an unhappy environment.