I've pondered taking my ring off almost every day since the Bomb. And I always leave it on because I understand why I'm thinking of taking it off: I want to hurt my wife in some way, to give her the bird. To me it's still a symbol of our marriage, of my vows. I can't tell anyone when the right time is, but I think that if you have to ask, it isn't time yet. You'll know in your heart when it's just a lump of metal that has no more meaning.
I also can't take mine off yet, because my daughters would notice immediately, and they havent' been told of the impending separation and divorce.
