This is the way I see Sisyphus:

He wants the rock on the hill. Rock wants nothing as it is just an object, lifeless and empty. Other people ("gods") want rock on the bottom, but just to spite Sisyphus.
For me, it is conflict of genuine achievement in life versus the aggressive and destructive society which has no purpose.

I too associate myself only with my mind. My body is futile and ridiculed by everyone, starting with my parents. But my mind is free, it goes wherever I wish.
Maybe, try to vent your anger on this stupid world of hairless apes? My therapist used to say it helps. It may.