If I start to develop actual dementia my plan is to have a friend take me to my favorite deer hunting spot, help me hike to the glassing spot I prefer, and leave me there with a pistol, fatal amount of some painkiller, or whatever. If a pistol, give it couple days for the scavengers to clean up the gore, if other means, just a day and then make an anonymous call to law enforcement so I’m found. If I forget why I’m there and don’t do anything, and survive the weather overnight, they’ll just take me to the nursing home.