Not Ours

We've occupied the sky,
Like we did with the earth.
We've nudged out the birds
Whose home it once was.
We believe we are flying,
Soaring to new heights.
We don't see it yet
But our journey is downwards.
We selfishly jostle
For the sake of 'mine' and 'ours'.
We care for none
Under the moon, the stars.
But it is not ours
If it is not borne with care.
It is not ours
If there's no love to spare.