I am in that same spot.... but you know... something happened the other day that makes me reconsider if my staying for the sake of the kids is REALLY the best option...
We were arguing. Which actually doesn't happen often... once a quarter or less normally and in this argument I got fed up and left the room. Our youngest (5 years old) had gotten up and over heard a large portion of it. When I left the room she proceeded to go in and tell daddy that "you have the choice to leave instead."

Her exact words. So... the question becomes... am I helping the kids or hurting them worse?
(Sorry... this is actually sidetracking this thread a bit, if it gets too bad I'll see about splitting the two!)