Not divorced does not equal success in my book. Nor does it in the books of anyone who's spent much time in an unhappy marriage.
Happily married = success.
Unhappily married = FAIL.
My parents stayed married for 20 years and made all of us miserable doing it. I have a good friend who has 4 parents. At an early age, her parents got divorced and, effectively, traded spouses. She has more love and support from happy, stable parents than anyone I've ever met. Her parents all live in the same town. When one of them posts on her FB wall, he or she will say, "We're thinking of you! All 4 of us!"
I think I've finally said about all I have to say on this one. (Yeah, yeah, I know, took me a while. I AM a woman, after all.

)