After having to make the decision three times I can tell you it's hard to do. When my mother had cancer she said she didn't want to keep up her treatments. They were painful to her and she had been told they would do no good. She said she would keep taking them if I wanted her to. I couldn't ask her to go through that for me. It was a tough decision. My dad had a stroke and we had never talked about it. So it was totally on me. Both of them I had to make the decision and you second guess yourself for years. When my wife was at that stage I had a talk with with both my children about and we agreed no machines to keep her alive. It was totally my decision but I didn't want either of them to be upset with me over it. It was all so hard to deal with I had a living will made and my wishes are known to both kids. and the have a copy of it.