If you were to get to that point, it wouldn't be a problem. You'll just be done. In all my time around here, I don;t think I have ever heard someone regret that they couldn't let their spouse back in.
And I think it is healthy that your inner voice tells you that you are and will be ok. If there is one thing I learned from all of this it is to take care of today and tomorrow will take care of itself.
