I stood for my XW1 as AS describes - when everyone told me to quit and give up, even friends, a pastor, counselors. We are divorced, but she went from a nasty person with multiple affairs who said awful lies about me - to a person who respects me, allows me to manage almost everything for the kids, allows me to lead their spiritual lives even though she doesn't believe as I do, and basically comes to me for advice with them. We juggle days with them, split holidays and work together often.
Even though I didn't save our marriage or R, I did create the best possible environment for the kids, and I hold my head high. Incidentally, my XW1, after blaming me for everything, is still miserable today. She hates her job, her life, her hours; only gets to see boyfriend a couple times a month, won't/can't commit to him - and this is 7 years from the original BD!