WriteLeft, it's a shame that your friend is unwilling to stop smoking and drinking for the sake of his health and his very life. I totally understand your decision, though. I had to do the same thing with my own mother. However, if Bruce ever decides that he is ready to get help for his alcoholism, I hope you will be there if he asks for your assistance. He has to hit a "bottom" first, though.
I hope we've been of some help to you in dealing with your friend's illness. Please come back anytime.