Hollywood using old vintage lenses for their design flaws, CG artists deliberately putting scratches and dust spots on their models, and so many more examples.
To come back to music, I believe no robot will ever be able to play Clair de Lune with the gentle delicacy and softness that a human who just lets themselves flow with the sound can produce.
That's what it's all about.
Check out Since I've Been Loving You by Led Zeppelin. The kick drum pedal squeaks all the way through, and they left it in.