This sounds appealing in the abstract but one thing to consider is the impact on other family members. My parents had a neighbor who chose to remain at home. However that meant his wife also had to stay at home to look after him (yes there were nurses who came in a couple of times a day, but a lot of the burden was still on the wife.) This meant her own life basically shut down. She never went out, and spent at least a year fully housebound for his care.
Once he died, she was able to go out, reconnect with friends, kickstart her life again. Couldn't help feeling the husband's choice here was a selfish one.