Dementia is one of the scariest things around. My mom works in Elder care and is around it constantly, and my great aunt suffered complete memory loss before she passed away at the age of 93. Her dementia became so bad that she was completely unable to communicate, she would start a sentence, say two words, and before she was able to get the third word out she had forgotten the entire conversation. Some times I think she would have been better off had she not survived for so long, but I also cherished the smile that would come on her face whenever we visited. She didn't know who we were, but she knew we were special to her and that made her smile.
With Dementia being hereditary I think about the future and where I will be down the road, seeing how terrible the affects are first hand really makes you keep these things in mind.
Thank you for commenting. I agree that it seems so cruel that someone could last so long, but maybe there is something about memory loss that is humane and we just don't understand. Blessings to you.