My mother-in-law has deep dementia now, and is in a home. She could not survive otherwise, as she needs 24x7 care from a team of careworkers and nurses. She can't walk, can't speak and is double incontienent. She no longer recognises me, and falls back asleep about 30 seconds after I've said hello.
It's dreadful to see and I pray every night that she will go to sleep and not wake up. She is 93, and in good health physically for her age. But her mind is gone and she is no longer the person I once knew. Awful, awful, awful.