For me, a dancer is part of an artist's entertainment - 'backup dancer' isn't even in my vocabulary.
You have to stay in shape. My grandmother, she started walking five miles a day when she was 60. She's 97 today and we don't know where the hell she is.
Works of art produced in the contemporary world are a further expression of that. But I don't think there is an active, ongoing nihilist self-consciousness in the artist.