My heart is with you. As a former Railroader, I walked far and hard all my life. My Wife and I still hike 4 miles at a time in the woods, once or twice a week. I am in my 74th year. I sometimes have to push through the arthritic pain in my joints, but movement is the best cure for that.
I find my old hunting friends falling by the wayside, too old, painful feet, neuropathy, too tired. One friend uses a "Gator" to get him out where he hunts (stand). Last deer I shot, I called a friend to help haul it out (just to be safe). Don't know where I'll be at 80-something, but I'm trying to fight the good fight.
I live in the suburbs, lots of deer in the backyard, including the biggest bucks I've ever seen alive. They have always been safe there, even when I had neighbors who wouldn't have called the police at my shot. I went out Saturday by myself for 5 hours, Opening day for ringneck, and the last hour for Seniors' Any Gun Antlerless Deer. First outing this year. Walked hard, and enjoyed sitting on a log until it would have been too dark to gut my kill.
Never saw any ringnecks or deer, but it was a good day.
Just keep enjoying Life as long as you can. :hatsoff:
Richard/Grumpa
PS: My Wife said you are blessed to live in Bitterroot Montana, and able to enjoy the beauty you wake up to everyday.