1) Just preparing for it by dieting properly and training could well put you in the best physical condition of your life.
2) By improving yourself, you do a wonderful thing for your family and all those close to you.
3) In the eyes of those same people, you will be a role model, a hero and an inspiration.
4) You will give your life new meaning. As a 14 time Ironman(my last at 55), I guarantee it.
5) You will most likely learn new skills you previously knew nothing…