When should fighters stop fighting?

For some, fighting is a business; make as much money from the sport as possible, and then walk away with your health intact. For others, fighting is a lifestyle; it's a drug that you can't just quit.

There is a tendency to disregard new-age combat sports as a clown show. Whether it's UFC fights on the White House South Lawn, former Disney kid Jake Paul becoming one of boxing's biggest financial draws, or whatever is going on at Misfits in a given week, the bravado, theatrics and occasional buffoonery that have always accompanied the fight game have inflated to an obscene level.