There is hope in everything, but I don't think that's what you should concern yourself with at this point. There is a thin line separating hope and expectation. Don't expect your actions to garner a result. You only set yourself up for more pain with that mind set. Been there, done that! Take the smart advice others are offering on here and look after yourself and your kids.
Think of your H's departure as a stage play. Your in the audience watching and listening to the play, but really have no control over what happens in the next scene. Oh the drama of it all!
I don't mean to sound coy about your situation, but the only control you have at this point is over your own well being and that of your kids.
Tom
"It is curious that physical courage should be so common in the world and moral courage so rare." -Mark Twain