I do it because I love my kids to death. I look at them at night as they're going to sleep and no matter what has been going on or what has been spoken by me and my W, I look at them and tell them how much I love them and that daddy isn't going anywhere. Sometimes I feel like they will have to drag me kicking and screaming away from my kids. I love them that much.
She is on the sidelines most of the time. She watches me loving every moment with my kids and she hangs out and pretends nothing is going on. Or she'll come in and say, "OK, who needs a diaper change!?" and blow up our fun. Or she'll look at the clock and start fretting over their schedule....