Funny, this was the topic of a dinner conversation with a friend who is a few years older than me. His older brother moving to a care facility, he commenting on how rapidly his brother deteriorated once it began.
I'm with those who fear dementia or a stroke more than death. Since I spend so much time mowing a large lawn with a 21" walk behind mower, I figure a nice sudden and fatal heart attack while doing that would be okay.
In the meantime, I'll try to be like Milner in American Grafitti: "I'm staying right here. Having fun as usual."