Nik, Dallas was good...just got back. Thanks for asking.
CLV, I have been thinking a lot about this "going dark" thing. You are right, without kids, this approach it is a no brainer. With kids, the issue is much more complex. We have to find a way to go dark to protect our emotions but in a way that is not harmful to the kids. Thus we still need to be civil.
My W knows I am not happy with her right now because of how she has handled certain situations, especially as they relate to the kids. I have lost respect for her, and have even more resentment towards her. However, I get to spend a ton of time with my amazing children. I do not want to do anything that will hurt them or that situation. By negatively reacting to my W and her terrible actions, I would be doing just that to the kids. I am better than that.
I do not think I am going to completely turn off the light, just turn down the dimmer...