What is the meaning of Life?

Mother Earth

Her love spread out like branches
Reaching upwards to the sky
Giving shade throughout the summer
And a place to keep you dry
So all the city's children
Built a treehouse round her spine
And though they never asked her
She still told them she was fine.
They etched their names with knives,
Along the edges of her bone.
A handwritten reminder,
She was always theirs to own.
Despite the pain they brought her,
Upwards she still grows.
Thinking if you live someone,
It the least that you can do.
But as the kids turned into adults,
And the winter air grew cold,l.
She wept sap from their cravings,
For they weighed too much to hold,
And the men all thought her branches,
Were to help their fires start,
And without a single "thank you"
Put a chainsaw through her heart.