Circumstances do not change morality. An easy way to tell true theology from fake, is to apply this rule. If something is A True and Living icon, then it stays true regardless of circumstances. Our marriage vows say In sickness and in health, for richer or poorer, until death do we part. Those of us who hold true to those vows, no divorce is possible due to circumstances.
Part of my reason for starting this study is that, at least as of March 2018, I'm significantly more conservative on this subject than the rest of the Catholic Church. This blog will either end up as a heretical view on marriage, or a catechism looking at the sad state of marriage in the 21st century and how to avoid your marriage bringing you a living hell. How do I know that marriage can end up in a living hell? How do I know Divorce is intrinsically evil even though CCC 2383 says that in certain extreme conditions it is permissible? Because in my country, over the last five generations, we've been running a living experiment in how to ruin families and destroy the sacrament, and we now know beyond any shadow of doubt that divorce causes hell in this life. Even when done with the best of intentions, the best of reasons. Even when you are certain that an abuser will kill you, divorce will make the situation worse.