LT I'm so sorry you find yourself in this position, it must be heartbreaking you have to do what's right for you & your children though, I'm sure you haven't come to this conclusion lightly.
I hope your W gets the help that she clearly needs & your children aren't too badly affected by this, your an amazing father and they are very lucky to have you.
Take care of yourself.
Divorce Final: Oct 2014
Your struggles today, develop strength for tomorrow...