I will take a short respiratory illness over years of dementia any day, thanks.
Jesus, absolutely. My grandfather was in a home with advanced dementia. He lasted 6 years, just having more of his faculties degrade.
In the end he died of an infection of some sort. It only killed him because he couldn't swallow the antibiotics (yeah, your swallow goes, so you start starving to death very slowly) and the family (my Granny, really) agreed that no extreme measures should be taken, such as IV antibiotics.
It was fucking grim. They had to still try to give him the drugs orally because not treating him at all wouldn't have been ethical. A couple of days in he started swallowing again. I was like "no, please, please let him die. No more of this for him."
I know not everyone in care homes is at that stage, but the home he was in was full of them. Death for very old, very sick people with a horrible disease that takes their life away slowly, is a blessed relief.