Thanks for the multiple comments above. This helps me be rational.
Yes, what happens when we run out of money? Right now, SS and pension covers almost everything for both households. We just have to be much thriftier than I had expected. But, the pension isn't COLA'd. We've got a LTC war chest, but it has started to shrink (some day I'll start a poll on that).
I've certainly thought about SSI. SSDI is out of the question because he doesn't have 10 years of work (this started in law school). So far, I've really hated to see him convince a judge that he is totally and permanently disabled. He worked a couple months last year on a temporary document review job, but didn't get called back for any additional jobs at the same firm. I wonder if he was falling asleep on the job.
The least bad plan at this point is to squeeze on the amount of money. First, because I need to do that financially. But, there is always the hope that he'll find the energy to at least work part time.
And, there are more moving parts here than I'm willing to share, mostly because I'm ashamed that I didn't take stronger actions sooner.
(And, I could open a whole nother tangent on my wife's brother and his wife. But, I believe that saying "no more" really worked there.)