I don't know anyone who can sustain 80 hour work weeks if they're not passionate about what they're doing and enjoy it. People who try to do it just for the money do it for a while, and then either turn into cheaters (as the article documents), or burn out and move onto more fulfilling careers.

Doing something you're passionate about and having an impact on the world is living. It is much more living than going to a job you don't give an f- about for 40 hours per week so you can buy a house in the suburbs and an SUV, retire after 40 years, and then die having left no impact on the world.