I can speak from a males point of view that the thought of not living under the same roof as my daughter provides incredible motivation for me to forgive me WS and work on the marriage. Some would probably say that is selfish and it probably is but the 'system' is set up so that even though my W had an affair if I divorce her she will get custody and I will become a weekend dad. I think the 'system' is a big part of the problem. My W made a choice to go outside the M. Granted, we had issues in the M or we wouldn't be where we are but she is the one that decided to go outside the M. Our 'system' doesn't hold her accountable at all for that decision. So, I am left with the choice of divorcing her and basically losing a huge amount of my time spent with my daughter or sticking it out, working on the M so that I can be with my daughter on a full-time basis. Many will say this is the wrong decision but as long as we are working towards a healthy reconcillation in the process and not subjecting my daughter to an unhealthy household (as much as possible) then I see nothing wrong with this decision. If it wasn't for my daughter I would already be gone. It's not a copout....it's as real as it gets.....
Mindshare
This is EXACTLY why I was motivated to try to work things out with WW. THIS was my reason to be willing to forgive her and save our marriage.
I'm living the aftermath of not working it out and exactly what Mindshare is describing.
I spend a fraction of the time with my kids that I could spend if I had been able to make things work with exww. The kids themselves strongly desire and express their desire to have mom and dad together at their big events. My daughter last night wanted mom to join us at dad's birthday party for her brothers. Her 6 year old mind doesn't understand that there have been serious consequences to the divorce and that not all is well with the people she loves the deepest.
Seeing this is heartbreaking because her innocense is showing. Her mind says, "Why can't mommy come to my party at daddy's house? Why can't daddy hang out at mommy's house with grandma and grandpa?"
Kids are innocent and don't understand the reality grown ups live in. It's sad to see that innocense smack face first into the reality. Seeing those broken hearts in the people you love most in this world is motivation enough to endure any personal unhappiness for their sake.