Thank you so much, how long ago did you have this done?
will your life change?, no not really except you may not be able to shoot a shot gun or do arc welding or work on your car motor while running.
is the operation fun?, (is any procedure fun?)no, it hurts, but with pain killers, it goes away fast enough. i'd say about 6 weeks you shouldn't raise you arm too high, after that , it's just a matter of getting used to it being there.
will it save your life if your heart starts to freak? it saved mine.
P.S. it doesn't cause cancer