If you do things with a certain type of result and cause a certain type of reaction or effect, then you increase your market value. It's very much a competition for the entertainment dollar, and that's never been more clearly evident than in today's NBA game.
Acting is sort of an extension of childhood. You get to play all of these roles and have so much fun. Playing an athlete would be so cool. Or where you get to shoot guns, ride horses. I wouldn't turn down any of that.
You become a better writer by writing. You become a better travel writer by writing about travel.