The point of The Myth of Sisyphus is that this is our life, to a large extent. We wake up in the morning, go to work, come home, have dinner, spend time with friends/family/pets, do some leisure activities, go to bed, rinse and repeat. Much of human life is repetitive and absurd, just like Sisyphus pushing his boulder.
The point Camus is trying to make is that we, like Sisyphus, can choose to live in the face of absurdity as a means of rebelling against it.
Sisyphus Shrugged 