My 80 year old father in law has had Parkinsons for over a decade now. His hands are shaky, he's unsteady on his feet (but his knees are shot anyway) but he's still alive and with his family. He's not as active now, of course, mostly because he can't walk due to his knees. But Neil isn't necessarily on death's door due to this.
Yep. I play senior softball with a guy in his late 60's who has Parkinsons. He can still play great ball but when he's standing in the outfield you can see his glove hand noticeably shaking as well as when he's just standing around.
At one time I thought I might be coming down with it (which I wasn't) and mentioned it to my doctor. He responded by saying why spend your time worrying about it since there is no cure. Just keep doing what you enjoy doing.........That made sense to me.