>>114468097It's notable because Kenny coudlve used his immortality as an excuse to go full nihilist or any other depressive world view, or simply kill his parents and siblings in a hateful rage at his situation, but he hasn't. If anything, his immortality has inspired him to be a better person than he'd otherwise be.
This is to the point that canonically he's offered Heaven each time he dies (complete with naked beauties), but always ends up turning it down to go back and help others.