Alzheimers and its ilk are at the forefront of the debate over here - that's what Terry Pratchett is dealing with and he's pro-his-right-to-assisted-suicide fairly vocally. He's also pro-finding-treatments-and-cures (and that's where his money is going) but in the same way that Stephen Fry is the big Bipolar Celeb, Pratchett is the Alzheimers Celeb, and he's not quiet about the assisted suicide thing.