Starbird, you have the most wonderful son as you know, plus the most supporting family, can understand how he just wants to be with his wife, after all these years, to him she is the girl he fell in love with and married, wish a miracle could happen and she recovers but it must be the most difficult time for him.
Tigerhouse, you looked after your wife to the end and did as she wanted, as she would have for you. The pain of losing your sole mate never goes, but as time goes on you carry it in your heart and go on living. It's been a long time for me, I don't talk about it anymore because when I do it's as if it was yesterday, but I know I did all I could. I am lucky that I can go on holiday, I never go where I went with my husband, do things differently but get a lot of pleasure planning it, reading up on the place I am visiting.
To have your loved ones best interest and well being to the end is what matters, respecting their wishes, you can do no more. The medical profession respect that, so if your wishes are known, that is what will happen.