I'm sorry that you can't smoke anymore.Your health is the most important thing though.I hope all goes will with you.
Stay positive and as healthy as possible.Remember, there is more to life than smoking a pipe, and it sounds like you had many years of enjoyment. Make the most of it and start another chapter!
While my health issues were not brought on by pipe smoking, I have been told, that any nicotine consumption can not be in my life. I am in shock as well as depressed.