Don't let the old man in! I'm 69, a pup compared to some, but I have become more sedentary as the years roll by.
Last year I called on an old friend (25-06) to finish the shower re-tile, he did an excellent job, and then I got sick the day before our season started and I never made it out the door. This year I called on my brother, who has never hunted, and we drew for the early hunt. I have never spent much outdoor time with my brother, so it will be a learning experience for both of us. The biggest hurdle will be teaching him glassing techniques, that you can cover more area sitting behind glass than you can cover on foot.
My dad was done by the time he reached 70. It may be time to hang it up, but I'm going to fight it every year!
The more I think about it, getting out and glassing may be the best antidote. Once you see something moving can only stir the movement in you.