If it's any comfort...I am also 54 years old....and since I removed most of the stress from my life, I look and feel 10 years younger....(both the dog and the cats tell me all the time).
It's kind of peaceful to live by yourself and not have to clean up any mess except the one I make...The Dog is much neater that Mr. Fandy, he doesn't leave laundry, towels dishes anywhere, he helps me exercise and we are both healthier....petting all the guys in the evening lowers my BP...as does the exercise.
maybe you want to suggest to your husband to at least wash the "easy clothes" (sheets towels his own underwear) and change the linens while you are at work...and vacuum, wash the kitchen floor...who knows, the specific tasks might actually help him focus on something....of course this is from a woman's alcoholic perspective, so I may be very off base.