SH, sorry to know that you are in a bad mood today. It is not easy to see your H this way.
The way I see it is that if there is a D, it is not a matter of OW wins or not. That's her problem. Lots of people in this world are richer, happier, have everything in life. That's life. Some people ends up with the upper hand, some do not. What matters is YOU!!! How you can make your life happier. If D makes you happier, so be it. If OW wins, even if she gets H (who is broken, but even if he is the best person in the world), good luck to her. What happens to her is her life. I know it must feel bad to feel like losing to a person like OW. But it is not about you, it is your H that makes the poor choice. You know you are strong and attractive and miles better than OW. Itis your stupid H who cannot see that. His problem. Concentrate on yourself and your kids.
Maanwhile, please take care of yourself. There will be times when you feel so alone when no one is around to talk to. A friend told me, "every family has their own problems." Ultimately, they will all go back to working on their family, life, issues, fun things. This board is great because we all know each other's situation and how bad it is and will offer support. At the same time, we are all different and will have to deal with things that works for us.