As I entered my 60's, realizing that I could no longer "kick ass and take names" like I was in my 20's, I took up carrying a handgun for SD and keeping a .410 for HD. Got my CCL and a little training. Had earlier NRA and Army training, so I had the basics covered. But I still had a pack of disabilities, from arthritis in my hands to PAD and COPD. Life sucks sometimes, but it's a damned sight better than the alternative!
I share this situation too. I am in my mid sixties, and the neurapathy in my hands interferes with me reloading magazines in a SA handgun, so I stick to revolvers. And the arthritis in my hands is a problem too. And now that we
are there we have to worry about predators out there who target the elderly and the disabled. But with all my problems there is no problem with my trigger finger.