My wife and I have an unwritten understanding that if either one of us is horrendously incapacitated, both physically and mentally, then one would humanely assist the other out. Trouble is, I'm not sure if I could actually do it in reality, ffor fear of making things worse and creating more suffering. I think I'd prefer the help of someone understanding in the profession. This debate reminds me that some animals will kill their brood rather than let another predator get to them. Also the story of Keyser S?ze in The Usual Suspects. Hungarian gangsters invade his house while he is away, raping his wife and holding his children hostage. When S?ze arrives they kill one of the children to show him that they mean business. They then threaten to kill his wife and remaining children if he does not surrender his business to them. Rather than give in to their demands, and to prevent his loved ones from having to live with the memory of what has happened, he murders his family and all but one of the Hungarians, whom he spares knowing that the survivor would tell the mafia what has transpired.