It's been three years since my father was rendered helpless by a massive stroke. It was either his third or fourth stroke. Unlike the others, this one wiped his cognitive skills, and all but the most rudimentary awareness. I don't think he would want to be like this.
It struck 16 months after my mother's death. I've read this is not unusual, for one spouse to suffer a traumatic illness after the other dies. He was distraught all during those 16 months, as anyone would be. My mother's death was fast - five weeks from diagnosis to death. During those 16 months, he said many times he'd always thought he'd go first. I think his stroke was the result of a broken heart.
I pray he's experiencing some peace these days.