my .02 cents... As hard as it may be you have to keep a civil relationship with the mother of your kids. You by no means have to like one another but at no time is it acceptable to talk bad about the other to your kids. My parents split a long time ago and it was definitely for the better, but the one resentment that both my sister and I share is that they could never have any respect for each other. In the end it has completely destroyed any sense of family we ever had. My mother skipped my sisters graduation because my father was there. My father skipped my sisters wedding because my mother was there. Only reason I had both parents at my grad was because it was in baseball stadium and they could have seperate sides. No joke!

Its different if you don't have any kids, but if you do it doesn't matter if your wife leaves to go set a new record in the porn industry... you still need to have respect for her in front of your kids.

That said good luck and just try to keep busy with all the things that make life as beautiful as it is.