Could it be?

[peacetoday]

Upside
You make perfect sense
I agree with your evaluation
he wants everything to stay the same

It appears at this point you have nothing to lose by pushing forward
Like you said, if he snaps out you can start over then
and if he doesnt
you will be ready to move on
Your children are almost grown and you will want to create a new life for you
It will be good
and you never know what might happen in the process but I sense it will be better than Limbo
peace