My dad died of complications of dementia. He had it for about 6 years. Some days were better than others. In the end when he went down hill he thankfully went fast. You don't want to see a loved one go that way.
I'm not sure this is true or not but the story is when Angus and Malcolm decided to form the band they both played guitar and had to decide who would play lead and who would play bass. Malcolm said he would rather play bass because playing lead would just get in the way of his drinking.