kindachaotic, thank you so much for your response.

You've helped me feel more hopeful already. And serious kudos to your husband for almost 20 years of sobriety. That's no small feat right there.
My husband and I talked further this afternoon. He's feeling better as well for having gotten that off his chest. This is a really difficult time for him right now. He recently left a very toxic job that had driven him to drink. While there's no doubt that it was the right thing to do, he's feeling guilty about the good people he left behind and struggling to adjust to a new identity. We're also in the process of moving back to his home state. This too is a very positive thing that we're both excited about. He wishes we were already there because every day we're still here in Florida makes him feel like he's still stuck somewhere he wants to move on from. Too many reminders of his old job and other things he's anxious to leave behind.
Once we're settled in to our new home, I'm going to see how he's feeling and make the suggestion again (if necessary) that he at least talk to a GP about trying a mild anti-depressant. I may also suggest that he try cognitive-behavioral therapy like I've been going to. He's noticed positive changes in me but is reluctant to try it himself. Maybe he'll see things in a different light once we've gotten past the hurdle of moving. That's my hope anyway.
Thank you again for taking the time to respond and help me put things in perspective. I really appreciate it.