Working Out is Selfish?

A bit of motivation at the gym is always welcome, aesthetic or goal oriented. There were TV screens at this gym playing videos of young, very aesthetic bodybuilders.

This one part struck me: this young guy claimed to have no interest in any work other than working on his body. This got me thinking, everyone plays a role in contributing to society, every job provides for the community in some way. How does professional bodybuilding work into this? Oops, we celebrate our athletes, celebrate their achievements and spirit... But...