I mean geez Cobra... when I read what you wrote about your wife... well... geez. How mean and hurtful! My H would try that statement and I didn't let him get away with it. He was simply full of cr*p!
I guess what I want to know is... do you LOVE your wife? Does she love you? Or are you both planning on bailing as soon as the kids are grown?
And if that is your plans... don't you think your kids can feel that? They might not know the specifics but they can feel the division! And do you really think growing up in that kind of energy is good?? (From personal experience I can tell you it's not... the old FOO, don't you know.)
So the 'staying together for the kids' is not valid. It's stupid and hurtful and so emotionally damaging to everyone involved.
And like Cally said... if what you wrote is really how you feel about your wife then it is going to come through in actions, words, attitude and just plain old vibes! And consequently; why would she even care how you feel about anything?
I empathyize with your right to stand up for yourself... to not be beat up on continuely... but you have to ask yourself, is your apparent derision for her causing her to attack you?