That sums it up pretty well, I think, Vicomte.
Makes sense to me. I'm never going to divorce my wife pretty much no matter what. I doubt she will ever divorce me either. It seems so unlikely.
BUT if I were married to a different woman, and things were different, I might. For example, if I were married to a woman who abused my kid, or if I were a woman married to a man who did, I would cut him/her off like a viper. Period. I love my kid more than I am obedient to something that somebody wrote that Jesus said. If Jesus meant "Don't divorce, even if your spouse abuses your kid", then my answer is: "Lord, I will not obey you on that. My child's safety comes before my obedience to you. Sorry."
And that's the way it is.
I can think of other circumstances. If my spouse attacked ME, that would likewise be the end of the marriage.
We all sin. If escaping from an abusive relationship is sin, then it's a sin I'm going to commit.
I suppose the problem I would have is that I would not be at all repentant for escaping abuse, and I would reproach God for expecting me to be.
So I guess that means - if the mechanical logic applied by some Christians is true - that were I to have an abusive spouse, that I would lose my Salvation and be thrown into the fires of Hell for eternity, because I would divorce that spouse and find another who loved me, and I would not feel guilty about it and "repent" it. Absolutely not.
True repentance of the divorce being impossible, then, human religious logic would consign me to the flames. I expect God is better than that. But if the humans are right, well, then I'm lucky God loves me enough to have not put me to the test by giving me an abusive spouse, because that is a test that I would fail.