My friend, I sometimes wonder what you are hanging on to; why you continue to pine for Sally, when you are getting less than zero in return, and absolutely no signs that things are changing. No baby steps, no affection, no nice comments or compliments. Just selfishness and meanness.
In another post, you mention that you only care about W and your kids - not yourself. Well, you have it wrong. You need to care about your kids and yourself...at least you have some control of the outcome. You need to be healthy, physically, mentally and emotionally, because the absolute reality is that she may never return to the marriage. You need to be ready to move on if that's the case, and stop waiting by the door for her to suddenly "wake up".
Your wife is going to do what she is going to do, whether you worry about it or not. So, choose not to worry about it. Sounds easy, and it's not...but that is where you have to get to.
Sorry if this sounds harsh, but you need to pull yourself out of this pit of despair, Treeman.