Leticia I so agree- I would have much 'preferred' to lose my mother when she was still in her prime, aged 85, of a sudden death- than to see her awful, painful decline- the loss of her eyes, her legs, her independence, her dignity, for another 10 years- which she hated with a vengeance. Very different of course with younger people.
Her dream was to go of a quick heart attack and be done with- but she had the most awful 10+ years of misery. I certainly would not wish that to anyone I love, and not for myself either- and I think my children would see that too, especially after the experience with their beloved grandmother- and agree it would be best for me... and for them too. They know how much it 'cost' me in a 1000s of ways, including my health to some extent- to have to give up my job to spend the 10 years back and forth to pick up the pieces, again and again (not that I regret any of it, thanks).