That is a heartwrenching story, but...Alzheimer's is a horrible, horrible disease. Having seen my Grandfather suffer with Lewybodies, a form of Alzheimer's, I can only say that I KNOW he would have been in support of this because ultimately, as soon as he was forced (quite literally, my father had to drag him across the street) to be put in a care home he gave up and I knew he'd had enough. It just became a waiting game for him.
I feel Alzheimer's can truly affect those outside looking in on their loved one suffering as well. The pain I felt seeing my Poppa forget who I was and having to tell him the same story from my childhood in order to get him to look at me, crying, and grab my hand and grumble gobbledegook. Choosing to die gives someone the opportunity, when they're ready, to go and let everyone say goodbye to them in a dignified and honourable manner without the pain and suffering we ALL go through at that time.
I don't know - I've only looked at choosing to die from the perspective of an Alzheimer's patient, but I can't be more in support of it after seeing what happened to my Grandad, what WILL ultimately happen to one of my favourite authors, and so many other people with degenerative diseases like the gentleman in this tv documentary.
I sure can imagine your pain when your Grandpa couldn't recognize you. Still, I am not entirely sure whether he himself was suffering while he couldn't remember. I mean... can one suffer because something one is not even aware of? What of people with mental illness (when we get down to it, what is Alzheimer´s but loss of certain cognitive functions)? They often aren't exactly dignified either.
Wanting to put someone down to save yourself from the pain you feel watching him seems a bit selfish, tbh.
Yeah, that´s cold but I really don't know how to say it otherwise. Sorry.