My grandmother died of Parkinson's, and she laid in a bed not recognizing, speaking, or moving for 2-3 years. It was horrible. Just curled up in a ball locked in her body. I don't wish that on anyone. It drove my Uncle (her son)to use her liquid OXY and overdose and kill himself. He was with her everyday. I decided if I am ever diagnosed, to do a few last things, say bye, and end it some how. I will not go out like that. I will not put my family through that. I feel for ya Buck, shit was hard. Second hardest thing next to being the only person in the family willing to hold my Grandfather's hand as they took him off the ventilator and stayed until he was gone. He was in a car accident. He had 5 kids, I don't talk to my Aunts and Uncle to this day for it. I was 24.
I get made fun of for getting pissed at the Michael J Fox pics, but if someone you love goes through that shit and suffers, you will never find humor in it.