interesting topic... I didn't see this show, and am only going on what I read here and what I know for myself to be true...
I got divorced in 2004. I am a strong, successful business woman... but I'm telling you... it hurt. Bad. And I was no doubt a little whiney, too. BUT, like Kristen and Lance, the ex and I ended with very little fighting, no attorney's used (even tho we owned a house etc!) and have done well with not bad mouthing each other. Yes, I comment on some of the things that made me unhappy, but I know he is a good person in many ways, and I comment on that too... he just wasn't good for ME. Or me for him.
I actually admire them both for how they handled the divorce. It's much, much easier to be hateful than to be nice... mostly because anger is a VERY real stage of the grieving process.
There is a fine line between "hobby" and "mental illness".