There is no other creative act besides live musical performance with this kind of return. You write a novel and wait years to know if it moved anyone. You make a record and wait months. You DJ and you know in four bars whether you read the room right.
The feedback isn't abstract either. It's not likes or reviews or someone telling you afterward that they enjoyed it. It's a room of people responding with their bodies in real time. The floor fills or it doesn't. The energy builds or it drops. You pushed when you should have held and you feel it immediately, not as criticism but as information, as the room telling you where it actually wants to go.
That's the gift of the steering wheel. Not control exactly, more like dialogue. The DJ proposes, the room responds, the DJ adjusts. Back and forth, in real time, for hours. It's the most direct creative conversation that exists. And you get to have it while the music is playing.