Well, I can't say for sure, because I am not at that point, but I consider it a possibility and huge benefit. In fact, a two-parent family seems barely sustain

Well, I can't say for sure, because I am not at that point, but I consider it a possibility and huge benefit. In fact, a two-parent family seems barely sustainable to me, precisely because of what you said: If one person so much as gets the flu, suddenly there's one adult taking care of both the kids and the recovering adult. With more than two on duty, it can significantly soften the impact. And, again, I technically don't have any "exes", only perhaps dormant relationships. :)