Hi ShockShattered,
I'm so sorry that you are going through this. I'll answer you as if I were one of your children.
I propose that you share what you've learned about being married and relationships with your children.
I empathize with your oldest. When I was in my teens, I swore the same - to never marry. Luckily, I met an amazing woman whom I've been married to for the last nine years - we married when I was 38. That's how long it took me to warm up to the idea of marriage. It took surviving a horrible relationship in my late 20s that was full of addiction problems (me, porn, her alcohol) and multiple instances of therapy throughout my life.
My parents had a chaotic relationship when I was growing up; you would never know if you saw them today in their 70s - they are almost the perfect couple. I don't know if there was any infidelity, but they did have a codependency situation (my diagnosis). My mom has never been healthy and has battled both physical and mental ailments her entire life. My dad, though a good man and father, was an a-hole (the kind that is proud of being one). They fought incessantly, and the tension in our house was near constant.
The worst part of my day was coming home. A few years ago, my siblings shared that they felt the same, so the terrible home situation lasted decades - I'm the oldest, being 5 years older than my brother, and 15 years older than my sister.
Three years ago, my mom was hospitalized, and we were concerned she was approaching the end of her life. Mom and Dad were brokenhearted because they were estranged from my siblings, and I was the only one who came to the hospital. I felt the obligation to no longer sweep our problems under the rug and took the opportunity to discuss our family situation with my parents, but it fell on deaf ears.
I grew up in the US but was born in a developing country. My parents immigrated to the US with me when I was a young boy. My parents grew up during the reign of a horrible dictator and the nation's recovery after his assassination. What I described as mine and my siblings' trauma didn't even register as such to either of them. My mom literally asked me multiple times, "What trauma [did any of you experience]?"
I think you are in a much better position than my parents, because you are aware of how you could have been different in your marriage.
As kids, we think our parents' relationship is the standard and have no concept that they are figuring it out as they go along. I don't think you need to explain why you're having trouble today; simply share the life lessons.
What I wish my parents had done is tell us something along the lines of - "See how we did that? That's not the way it should have been done. We know now that this is the way to do it, and we're working on making it so."
I hope that helps.
[This message edited by IThinkTooMuch at 9:07 PM, Monday, June 22nd]