You know it's funny, now that I'm single all of the married people envy me! And they don't even have to deal with the kind of stuff I was dealing with! Being alone is faaaaar better than dealing with the insanity, the lies, the constant worry. I don't have children (only the kind with fur) but I really think that kids are all the reason in the world to get away and stay away. My parents were abusive alchi's and I had always wished they had divorced. It might have possible made my childhood a lot better than what it was.
When you leave them it is hard, but being free and clear of them in the long run is far better a goal than giving in to scared, angry and hurt feelings. We all have those moments. You can do this. Believe me, I never planned on getting a divorce, I was very against it, but I just couldn't do anymore, couldn't give anymore so on and so forth. Honestly though, being alone is better than the madness.