My thoughts are with you! Glad you can still play.Yeah I'm retired also and care for my very sick wife 90% of the time, but they do let me gig occasionally. I've had an ACC gear appropriate gig (outside/big stage or room) maybe 4-6 times a year and don't hesitate to use my big guns whenever possible.
Most of my playing time lately has been in church every Sunday morning and with The Rockits (once or twice a month), a 50's-70 retro-rock act. Then there's Dizzy Biz, a trio consisting of acoustic guitar, violin and bass (usually fretless) and we all sing so big harmonies. For DizzyBiz I usually use very small modern gear as we travel light.
DizzyBiz hosts a week-night open mic locally but I've been on leave for most of a year to be home with my sweetie.
I am thankful for how much I do get to play at my age. I don't ever want to stop completely.
I had a 5 year or so hiatus from playing...I just started to play some around the house. Man...it's like starting over....
I had to relearn many things. I have started to play to my early roots music.. the Beatles, Hendrix, Grand Funk....it's coming back slowly.
The best of luck to your wife and you.