Yes

At least if you have lots of hope for the future and hope for the kids and hope for the relationship and there are glimpses of a happiness and serinity that might be possible if only you can get through the bad patch. At some point, though, hope needs to be tempered by realism, and if the bad treatment continues or worsens or “bad treatment” is really just abuse to begin with, without any indication that it’s changing, then it’s time to let go, grieve the future that could have been, and move on.

Or, y’know, something like that. Afterward I keep thinking I had too much hope and not enough realism and should have left earlier but I’m out now so there it is.