Sky and ground

According to Greek myth, Prometheus and his brother Epimetheus made the creatures on Earth out of clay. Epimetheus made wild and extraordinary animals, giving them strange and unique features.
But Prometheus made humans with care.
He gave them minds to ask, learn, and explore.
He gave them hands to do what they needed.
He gave them two legs to walk upright, above other creatures.
And he gave them straight, proud backs so they may look up at the sky.
But one day I was walking home, looking at the sidewalk before me, and I thought;
If this myth is true, then why do I slouch so and look at the ground a step in front of me, instead of what lies far ahead?
So I straightened my back and adjusted my gaze.
But if Prometheus made us to look up to the stars, why do so many people look down on the ground they stand on and unhappily think of what could be done to change it, instead of looking up to the distant stars and being humbled and feeling lucky to be where they are?