I think it's worth noting, with all this talk of happiness and sacrifice, that whatever reason you've got your spouse deciding to stay (and be unhappy) for the sake of the kids...is a chance for you to make real change in yourself and possibly change your future together. DB could actually help turn your marriage around.
I think while you're committed to trudging through life together, on your own privately you could take the opportunity to become someone only a fool would leave. Even just the ability to detach yourself from your spouse's words and actions would make a world of difference. I would urge you to DB for your own sake.
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.