This is a very nasty disease. Both of my parents ended their lives in the Alzheimer's morass as did several uncles and aunts. I come from a very long lived family and Alzheimer's didn't show up until my parents and other relatives were in their mid-80s or even later (as with my Mom who fell into dementia at age 95).

Even though these family members all had long productive lives before dementia hit them it is still a horrible ending for any person's life. Generally, long term care was adequate for most of my family members except for one aunt that suffered in an inadequate facility in Calgary before we family members banded together to arrange private caregivers for her.

My brothers and sister and I were able to keep our parents in their own home until they died. My sister and one brother provided considerable emotional support for our parents. I am the high income sibling and I provided the cash for live-in caregivers for our parents. 

Sadly, most families are unable to do that.