Going Broad Helps you Go Deep

The more things you are decent at, the more effective you will be at the one thing you focus on. It will also allow you to better handle novel situations because you can draw on different conceptual models.

Really, any of the creative professions (I would argue that any profession) benefits from a multi-faceted approach. The broader your knowledge, the deeper you can go in any particular area, controlling for time and energy limitations (which are consistently overestimated anyway).

“So what do you do?”
“I'm glad you asked. Get comfortable.”