Certainly it can wear us down. We have to try to focus elsewhere: on us, our kids, building a stable home for our kids, modeling moving forward for our kids, etc.
There is nothing you can do to stop it. There's nothing you did to cause it. It is hers to fix.
You are stronger than you know. Focus on you and your kids. Post as often as you'd like. This is a safe place to find support.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced