I get what you're saying. My wife is an in home hospice care worker. She's seen people who have gone crazy from Alzheimers. They have these rare lucid moments

I get what you're saying. My wife is an in home hospice care worker. She's seen people who have gone crazy from Alzheimers. They have these rare lucid moments where they understand what they're trapped in, and have begged her to kill them. She's also worked with people who have Parkinsons, where their mental faculties are fine, yet their bodily control dissolves. They die by losing the ability to send the muscular commands to breathe. Suffocation. So yes, when you talk about making durable organs to substitute failing ones, it sounds like a great idea. Until you hit end of life. At least ones where stuff fails isn't as bad, with all-mechanicals. The diseases that hit the brain and destroy cogent thought are the absolute worst. At least a family can potentially go to Oregon for physician assisted suicide. Another solution to this is a kill switch: you hold the key to the destruction/End of Life of the device, killing you in the process. That would allow you to use these devices, and when you decide, to have a good death.